Finding the Fourth Proportional to 1,297,789,109.13, 1,790,939,071.20 and 703,069,339.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297,789,109.13 : 1,790,939,071.20 = 703,069,339.05 : x
2. Step 2: Convert to fraction form
   1,297,789,109.13/1,790,939,071.20 = 703,069,339.05/x
3. Step 3: Cross multiply
   1,297,789,109.13x = 1,790,939,071.20 × 703,069,339.05
4. Step 4: Simplify right side
   1,297,789,109.13x = 1,259,154,349,067,404,800
5. Step 5: Solve for x
   x = 1,259,154,349,067,404,800/1,297,789,109.13
6. Step 6: Final answer
   x = 970,230,324.95