Finding the Fourth Proportional to 1,060,227.72, 1,590,334.16 and 429,132.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060,227.72 : 1,590,334.16 = 429,132.42 : x
2. Step 2: Convert to fraction form
   1,060,227.72/1,590,334.16 = 429,132.42/x
3. Step 3: Cross multiply
   1,060,227.72x = 1,590,334.16 × 429,132.42
4. Step 4: Simplify right side
   1,060,227.72x = 682,463,944,543.81
5. Step 5: Solve for x
   x = 682,463,944,543.81/1,060,227.72
6. Step 6: Final answer
   x = 643,695.62