Finding the Fourth Proportional to 2,498.90, 3,748.38 and 649.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,498.90 : 3,748.38 = 649.91 : x
2. Step 2: Convert to fraction form
   2,498.90/3,748.38 = 649.91/x
3. Step 3: Cross multiply
   2,498.90x = 3,748.38 × 649.91
4. Step 4: Simplify right side
   2,498.90x = 2,436,109.65
5. Step 5: Solve for x
   x = 2,436,109.65/2,498.90
6. Step 6: Final answer
   x = 974.87