Finding the Fourth Proportional to 1,659.41, 2,290.12 and 913.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.41 : 2,290.12 = 913.51 : x
2. Step 2: Convert to fraction form
   1,659.41/2,290.12 = 913.51/x
3. Step 3: Cross multiply
   1,659.41x = 2,290.12 × 913.51
4. Step 4: Simplify right side
   1,659.41x = 2,092,036.07
5. Step 5: Solve for x
   x = 2,092,036.07/1,659.41
6. Step 6: Final answer
   x = 1,260.71