Finding the Fourth Proportional to 2,290.32, 3,160.89 and 1,406.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.32 : 3,160.89 = 1,406.61 : x
2. Step 2: Convert to fraction form
   2,290.32/3,160.89 = 1,406.61/x
3. Step 3: Cross multiply
   2,290.32x = 3,160.89 × 1,406.61
4. Step 4: Simplify right side
   2,290.32x = 4,446,139.48
5. Step 5: Solve for x
   x = 4,446,139.48/2,290.32
6. Step 6: Final answer
   x = 1,941.27