Finding the Fourth Proportional to 1,606.16, 2,216.78 and 934.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.16 : 2,216.78 = 934.17 : x
2. Step 2: Convert to fraction form
   1,606.16/2,216.78 = 934.17/x
3. Step 3: Cross multiply
   1,606.16x = 2,216.78 × 934.17
4. Step 4: Simplify right side
   1,606.16x = 2,070,841.50
5. Step 5: Solve for x
   x = 2,070,841.50/1,606.16
6. Step 6: Final answer
   x = 1,289.32