Finding the Fourth Proportional to 1,662.58, 2,294.33 and 916.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.58 : 2,294.33 = 916.61 : x
2. Step 2: Convert to fraction form
   1,662.58/2,294.33 = 916.61/x
3. Step 3: Cross multiply
   1,662.58x = 2,294.33 × 916.61
4. Step 4: Simplify right side
   1,662.58x = 2,102,989.77
5. Step 5: Solve for x
   x = 2,102,989.77/1,662.58
6. Step 6: Final answer
   x = 1,264.90