Finding the Fourth Proportional to 2,498.34, 3,747.78 and 1,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.34 : 3,747.78 = 1,038.72 : x
2. Step 2: Convert to fraction form
   2,498.34/3,747.78 = 1,038.72/x
3. Step 3: Cross multiply
   2,498.34x = 3,747.78 × 1,038.72
4. Step 4: Simplify right side
   2,498.34x = 3,892,894.04
5. Step 5: Solve for x
   x = 3,892,894.04/2,498.34
6. Step 6: Final answer
   x = 1,558.19