Finding the Fourth Proportional to 2,650.38, 3,972.33 and 916.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.38 : 3,972.33 = 916.98 : x
2. Step 2: Convert to fraction form
   2,650.38/3,972.33 = 916.98/x
3. Step 3: Cross multiply
   2,650.38x = 3,972.33 × 916.98
4. Step 4: Simplify right side
   2,650.38x = 3,642,547.16
5. Step 5: Solve for x
   x = 3,642,547.16/2,650.38
6. Step 6: Final answer
   x = 1,374.35