Finding the Fourth Proportional to 1,665.35, 2,499.48 and 971.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.35 : 2,499.48 = 971.06 : x
2. Step 2: Convert to fraction form
   1,665.35/2,499.48 = 971.06/x
3. Step 3: Cross multiply
   1,665.35x = 2,499.48 × 971.06
4. Step 4: Simplify right side
   1,665.35x = 2,427,132.55
5. Step 5: Solve for x
   x = 2,427,132.55/1,665.35
6. Step 6: Final answer
   x = 1,457.44