Finding the Fourth Proportional to 1,382.30, 1,906.96 and 934.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.30 : 1,906.96 = 934.03 : x
2. Step 2: Convert to fraction form
   1,382.30/1,906.96 = 934.03/x
3. Step 3: Cross multiply
   1,382.30x = 1,906.96 × 934.03
4. Step 4: Simplify right side
   1,382.30x = 1,781,150.75
5. Step 5: Solve for x
   x = 1,781,150.75/1,382.30
6. Step 6: Final answer
   x = 1,288.54