Finding the Fourth Proportional to 1,291,158.51, 1,934,493.30 and 906,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,158.51 : 1,934,493.30 = 906,090.72 : x
2. Step 2: Convert to fraction form
   1,291,158.51/1,934,493.30 = 906,090.72/x
3. Step 3: Cross multiply
   1,291,158.51x = 1,934,493.30 × 906,090.72
4. Step 4: Simplify right side
   1,291,158.51x = 1,752,826,427,032.18
5. Step 5: Solve for x
   x = 1,752,826,427,032.18/1,291,158.51
6. Step 6: Final answer
   x = 1,357,560.99