Finding the Fourth Proportional to 1,439,793.90, 2,157,066.45 and 1,172,105.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439,793.90 : 2,157,066.45 = 1,172,105.10 : x
2. Step 2: Convert to fraction form
   1,439,793.90/2,157,066.45 = 1,172,105.10/x
3. Step 3: Cross multiply
   1,439,793.90x = 2,157,066.45 × 1,172,105.10
4. Step 4: Simplify right side
   1,439,793.90x = 2,528,308,587,083.90
5. Step 5: Solve for x
   x = 2,528,308,587,083.90/1,439,793.90
6. Step 6: Final answer
   x = 1,756,021.18