Finding the Fourth Proportional to 1,659.82, 2,290.56 and 913.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.82 : 2,290.56 = 913.75 : x
2. Step 2: Convert to fraction form
   1,659.82/2,290.56 = 913.75/x
3. Step 3: Cross multiply
   1,659.82x = 2,290.56 × 913.75
4. Step 4: Simplify right side
   1,659.82x = 2,092,999.20
5. Step 5: Solve for x
   x = 2,092,999.20/1,659.82
6. Step 6: Final answer
   x = 1,260.98