Finding the Fourth Proportional to 2,996.16, 4,494.89 and 916.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,996.16 : 4,494.89 = 916.31 : x
2. Step 2: Convert to fraction form
   2,996.16/4,494.89 = 916.31/x
3. Step 3: Cross multiply
   2,996.16x = 4,494.89 × 916.31
4. Step 4: Simplify right side
   2,996.16x = 4,118,726.18
5. Step 5: Solve for x
   x = 4,118,726.18/2,996.16
6. Step 6: Final answer
   x = 1,374.67