Finding the Fourth Proportional to 1,665.35, 2,498.29 and 625.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.35 : 2,498.29 = 625.21 : x
2. Step 2: Convert to fraction form
   1,665.35/2,498.29 = 625.21/x
3. Step 3: Cross multiply
   1,665.35x = 2,498.29 × 625.21
4. Step 4: Simplify right side
   1,665.35x = 1,561,955.89
5. Step 5: Solve for x
   x = 1,561,955.89/1,665.35
6. Step 6: Final answer
   x = 937.91