Finding the Fourth Proportional to 1,659.47, 2,290.10 and 913.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.47 : 2,290.10 = 913.46 : x
2. Step 2: Convert to fraction form
   1,659.47/2,290.10 = 913.46/x
3. Step 3: Cross multiply
   1,659.47x = 2,290.10 × 913.46
4. Step 4: Simplify right side
   1,659.47x = 2,091,898.73
5. Step 5: Solve for x
   x = 2,091,898.73/1,659.47
6. Step 6: Final answer
   x = 1,260.59