Finding the Fourth Proportional to 1,607.13, 2,217.71 and 934.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.13 : 2,217.71 = 934.83 : x
2. Step 2: Convert to fraction form
   1,607.13/2,217.71 = 934.83/x
3. Step 3: Cross multiply
   1,607.13x = 2,217.71 × 934.83
4. Step 4: Simplify right side
   1,607.13x = 2,073,184.18
5. Step 5: Solve for x
   x = 2,073,184.18/1,607.13
6. Step 6: Final answer
   x = 1,289.99