Finding the Fourth Proportional to 1,787.50, 2,466.57 and 1,031.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.50 : 2,466.57 = 1,031.23 : x
2. Step 2: Convert to fraction form
   1,787.50/2,466.57 = 1,031.23/x
3. Step 3: Cross multiply
   1,787.50x = 2,466.57 × 1,031.23
4. Step 4: Simplify right side
   1,787.50x = 2,543,600.98
5. Step 5: Solve for x
   x = 2,543,600.98/1,787.50
6. Step 6: Final answer
   x = 1,422.99