Finding the Fourth Proportional to 1,659.34, 2,290.35 and 996.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.34 : 2,290.35 = 996.31 : x
2. Step 2: Convert to fraction form
   1,659.34/2,290.35 = 996.31/x
3. Step 3: Cross multiply
   1,659.34x = 2,290.35 × 996.31
4. Step 4: Simplify right side
   1,659.34x = 2,281,898.61
5. Step 5: Solve for x
   x = 2,281,898.61/1,659.34
6. Step 6: Final answer
   x = 1,375.18