Finding the Fourth Proportional to 1,659.02, 2,485.77 and 1,111.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.02 : 2,485.77 = 1,111.35 : x
2. Step 2: Convert to fraction form
   1,659.02/2,485.77 = 1,111.35/x
3. Step 3: Cross multiply
   1,659.02x = 2,485.77 × 1,111.35
4. Step 4: Simplify right side
   1,659.02x = 2,762,560.49
5. Step 5: Solve for x
   x = 2,762,560.49/1,659.02
6. Step 6: Final answer
   x = 1,665.18