Finding the Fourth Proportional to 1,291,887.82, 1,780,957.38 and 908,725.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,887.82 : 1,780,957.38 = 908,725.42 : x
2. Step 2: Convert to fraction form
   1,291,887.82/1,780,957.38 = 908,725.42/x
3. Step 3: Cross multiply
   1,291,887.82x = 1,780,957.38 × 908,725.42
4. Step 4: Simplify right side
   1,291,887.82x = 1,618,401,243,142.60
5. Step 5: Solve for x
   x = 1,618,401,243,142.60/1,291,887.82
6. Step 6: Final answer
   x = 1,252,741.31