Finding the Fourth Proportional to 3,659.80, 5,490.42 and 1,062.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,659.80 : 5,490.42 = 1,062.76 : x
2. Step 2: Convert to fraction form
   3,659.80/5,490.42 = 1,062.76/x
3. Step 3: Cross multiply
   3,659.80x = 5,490.42 × 1,062.76
4. Step 4: Simplify right side
   3,659.80x = 5,834,998.76
5. Step 5: Solve for x
   x = 5,834,998.76/3,659.80
6. Step 6: Final answer
   x = 1,594.35