Finding the Fourth Proportional to 1,457.50, 2,185.17 and 938.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.50 : 2,185.17 = 938.08 : x
2. Step 2: Convert to fraction form
   1,457.50/2,185.17 = 938.08/x
3. Step 3: Cross multiply
   1,457.50x = 2,185.17 × 938.08
4. Step 4: Simplify right side
   1,457.50x = 2,049,864.27
5. Step 5: Solve for x
   x = 2,049,864.27/1,457.50
6. Step 6: Final answer
   x = 1,406.42