Finding the Fourth Proportional to 2,507.02, 3,458.37 and 1,666.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.02 : 3,458.37 = 1,666.78 : x
2. Step 2: Convert to fraction form
   2,507.02/3,458.37 = 1,666.78/x
3. Step 3: Cross multiply
   2,507.02x = 3,458.37 × 1,666.78
4. Step 4: Simplify right side
   2,507.02x = 5,764,341.95
5. Step 5: Solve for x
   x = 5,764,341.95/2,507.02
6. Step 6: Final answer
   x = 2,299.28