Finding the Fourth Proportional to 915,096.40, 1,262,908.61 and 507,326.15

Step by Step Solution

1. Step 1: Write the proportion equation
   915,096.40 : 1,262,908.61 = 507,326.15 : x
2. Step 2: Convert to fraction form
   915,096.40/1,262,908.61 = 507,326.15/x
3. Step 3: Cross multiply
   915,096.40x = 1,262,908.61 × 507,326.15
4. Step 4: Simplify right side
   915,096.40x = 640,706,567,338.74
5. Step 5: Solve for x
   x = 640,706,567,338.74/915,096.40
6. Step 6: Final answer
   x = 700,151.99