Finding the Fourth Proportional to 1,291,908.89, 1,938,298.01 and 572,150.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,908.89 : 1,938,298.01 = 572,150.79 : x
2. Step 2: Convert to fraction form
   1,291,908.89/1,938,298.01 = 572,150.79/x
3. Step 3: Cross multiply
   1,291,908.89x = 1,938,298.01 × 572,150.79
4. Step 4: Simplify right side
   1,291,908.89x = 1,108,998,734,816.17
5. Step 5: Solve for x
   x = 1,108,998,734,816.17/1,291,908.89
6. Step 6: Final answer
   x = 858,418.69