Finding the Fourth Proportional to 1,659.83, 2,290.49 and 913.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.83 : 2,290.49 = 913.77 : x
2. Step 2: Convert to fraction form
   1,659.83/2,290.49 = 913.77/x
3. Step 3: Cross multiply
   1,659.83x = 2,290.49 × 913.77
4. Step 4: Simplify right side
   1,659.83x = 2,092,976.48
5. Step 5: Solve for x
   x = 2,092,976.48/1,659.83
6. Step 6: Final answer
   x = 1,260.96