Finding the Fourth Proportional to 1,117,308.42, 1,676,061.42 and 318,572.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,308.42 : 1,676,061.42 = 318,572.82 : x
2. Step 2: Convert to fraction form
   1,117,308.42/1,676,061.42 = 318,572.82/x
3. Step 3: Cross multiply
   1,117,308.42x = 1,676,061.42 × 318,572.82
4. Step 4: Simplify right side
   1,117,308.42x = 533,947,613,062.60
5. Step 5: Solve for x
   x = 533,947,613,062.60/1,117,308.42
6. Step 6: Final answer
   x = 477,887.40