Finding the Fourth Proportional to 1,662.56, 2,292.59 and 1,242.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.56 : 2,292.59 = 1,242.25 : x
2. Step 2: Convert to fraction form
   1,662.56/2,292.59 = 1,242.25/x
3. Step 3: Cross multiply
   1,662.56x = 2,292.59 × 1,242.25
4. Step 4: Simplify right side
   1,662.56x = 2,847,963.72
5. Step 5: Solve for x
   x = 2,847,963.72/1,662.56
6. Step 6: Final answer
   x = 1,713.00