Finding the Fourth Proportional to 2,290.52, 3,161.14 and 1,406.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.52 : 3,161.14 = 1,406.15 : x
2. Step 2: Convert to fraction form
   2,290.52/3,161.14 = 1,406.15/x
3. Step 3: Cross multiply
   2,290.52x = 3,161.14 × 1,406.15
4. Step 4: Simplify right side
   2,290.52x = 4,445,037.01
5. Step 5: Solve for x
   x = 4,445,037.01/2,290.52
6. Step 6: Final answer
   x = 1,940.62