Finding the Fourth Proportional to 1,041.39, 1,562.00 and 878.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.39 : 1,562.00 = 878.31 : x
2. Step 2: Convert to fraction form
   1,041.39/1,562.00 = 878.31/x
3. Step 3: Cross multiply
   1,041.39x = 1,562.00 × 878.31
4. Step 4: Simplify right side
   1,041.39x = 1,371,915.83
5. Step 5: Solve for x
   x = 1,371,915.83/1,041.39
6. Step 6: Final answer
   x = 1,317.39