Finding the Fourth Proportional to 2,287.98, 3,438.04 and 1,248.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.98 : 3,438.04 = 1,248.74 : x
2. Step 2: Convert to fraction form
   2,287.98/3,438.04 = 1,248.74/x
3. Step 3: Cross multiply
   2,287.98x = 3,438.04 × 1,248.74
4. Step 4: Simplify right side
   2,287.98x = 4,293,218.07
5. Step 5: Solve for x
   x = 4,293,218.07/2,287.98
6. Step 6: Final answer
   x = 1,876.42