Finding the Fourth Proportional to 1,665.90, 2,502.45 and 1,604.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.90 : 2,502.45 = 1,604.70 : x
2. Step 2: Convert to fraction form
   1,665.90/2,502.45 = 1,604.70/x
3. Step 3: Cross multiply
   1,665.90x = 2,502.45 × 1,604.70
4. Step 4: Simplify right side
   1,665.90x = 4,015,681.52
5. Step 5: Solve for x
   x = 4,015,681.52/1,665.90
6. Step 6: Final answer
   x = 2,410.52