Finding the Fourth Proportional to 2,892.50, 4,340.28 and 1,248.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.50 : 4,340.28 = 1,248.90 : x
2. Step 2: Convert to fraction form
   2,892.50/4,340.28 = 1,248.90/x
3. Step 3: Cross multiply
   2,892.50x = 4,340.28 × 1,248.90
4. Step 4: Simplify right side
   2,892.50x = 5,420,575.69
5. Step 5: Solve for x
   x = 5,420,575.69/2,892.50
6. Step 6: Final answer
   x = 1,874.01