Finding the Fourth Proportional to 1,233,711.28, 1,845,449.10 and 1,158,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233,711.28 : 1,845,449.10 = 1,158,128.56 : x
2. Step 2: Convert to fraction form
   1,233,711.28/1,845,449.10 = 1,158,128.56/x
3. Step 3: Cross multiply
   1,233,711.28x = 1,845,449.10 × 1,158,128.56
4. Step 4: Simplify right side
   1,233,711.28x = 2,137,267,308,736.30
5. Step 5: Solve for x
   x = 2,137,267,308,736.30/1,233,711.28
6. Step 6: Final answer
   x = 1,732,388.56