Finding the Fourth Proportional to 1,458.32, 2,185.62 and 938.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.32 : 2,185.62 = 938.12 : x
2. Step 2: Convert to fraction form
   1,458.32/2,185.62 = 938.12/x
3. Step 3: Cross multiply
   1,458.32x = 2,185.62 × 938.12
4. Step 4: Simplify right side
   1,458.32x = 2,050,373.83
5. Step 5: Solve for x
   x = 2,050,373.83/1,458.32
6. Step 6: Final answer
   x = 1,405.98