Finding the Fourth Proportional to 1,410.74, 1,947.68 and 939.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.74 : 1,947.68 = 939.32 : x
2. Step 2: Convert to fraction form
   1,410.74/1,947.68 = 939.32/x
3. Step 3: Cross multiply
   1,410.74x = 1,947.68 × 939.32
4. Step 4: Simplify right side
   1,410.74x = 1,829,494.78
5. Step 5: Solve for x
   x = 1,829,494.78/1,410.74
6. Step 6: Final answer
   x = 1,296.83