Finding the Fourth Proportional to 1,500,816.21, 2,071,116.88 and 812,483.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500,816.21 : 2,071,116.88 = 812,483.05 : x
2. Step 2: Convert to fraction form
   1,500,816.21/2,071,116.88 = 812,483.05/x
3. Step 3: Cross multiply
   1,500,816.21x = 2,071,116.88 × 812,483.05
4. Step 4: Simplify right side
   1,500,816.21x = 1,682,747,359,568.88
5. Step 5: Solve for x
   x = 1,682,747,359,568.88/1,500,816.21
6. Step 6: Final answer
   x = 1,121,221.47