Finding the Fourth Proportional to 1,666.88, 2,498.96 and 693.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.88 : 2,498.96 = 693.71 : x
2. Step 2: Convert to fraction form
   1,666.88/2,498.96 = 693.71/x
3. Step 3: Cross multiply
   1,666.88x = 2,498.96 × 693.71
4. Step 4: Simplify right side
   1,666.88x = 1,733,542.78
5. Step 5: Solve for x
   x = 1,733,542.78/1,666.88
6. Step 6: Final answer
   x = 1,040.00