Finding the Fourth Proportional to 1,665.31, 2,498.11 and 972.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.31 : 2,498.11 = 972.06 : x
2. Step 2: Convert to fraction form
   1,665.31/2,498.11 = 972.06/x
3. Step 3: Cross multiply
   1,665.31x = 2,498.11 × 972.06
4. Step 4: Simplify right side
   1,665.31x = 2,428,312.81
5. Step 5: Solve for x
   x = 2,428,312.81/1,665.31
6. Step 6: Final answer
   x = 1,458.17