Finding the Fourth Proportional to 2,892.50, 4,339.50 and 1,248.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,892.50 : 4,339.50 = 1,248.65 : x
2. Step 2: Convert to fraction form
   2,892.50/4,339.50 = 1,248.65/x
3. Step 3: Cross multiply
   2,892.50x = 4,339.50 × 1,248.65
4. Step 4: Simplify right side
   2,892.50x = 5,418,506.57
5. Step 5: Solve for x
   x = 5,418,506.57/2,892.50
6. Step 6: Final answer
   x = 1,873.30