Finding the Fourth Proportional to 1,662.60, 2,294.42 and 916.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.60 : 2,294.42 = 916.59 : x
2. Step 2: Convert to fraction form
   1,662.60/2,294.42 = 916.59/x
3. Step 3: Cross multiply
   1,662.60x = 2,294.42 × 916.59
4. Step 4: Simplify right side
   1,662.60x = 2,103,026.37
5. Step 5: Solve for x
   x = 2,103,026.37/1,662.60
6. Step 6: Final answer
   x = 1,264.91