Finding the Fourth Proportional to 1,870.50, 2,581.32 and 1,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.50 : 2,581.32 = 1,042.50 : x
2. Step 2: Convert to fraction form
   1,870.50/2,581.32 = 1,042.50/x
3. Step 3: Cross multiply
   1,870.50x = 2,581.32 × 1,042.50
4. Step 4: Simplify right side
   1,870.50x = 2,691,026.10
5. Step 5: Solve for x
   x = 2,691,026.10/1,870.50
6. Step 6: Final answer
   x = 1,438.67