Finding the Fourth Proportional to 2,531.31, 3,795.71 and 887.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,531.31 : 3,795.71 = 887.61 : x
2. Step 2: Convert to fraction form
   2,531.31/3,795.71 = 887.61/x
3. Step 3: Cross multiply
   2,531.31x = 3,795.71 × 887.61
4. Step 4: Simplify right side
   2,531.31x = 3,369,110.15
5. Step 5: Solve for x
   x = 3,369,110.15/2,531.31
6. Step 6: Final answer
   x = 1,330.97