Finding the Fourth Proportional to 2,290.15, 3,160.56 and 1,295.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.15 : 3,160.56 = 1,295.47 : x
2. Step 2: Convert to fraction form
   2,290.15/3,160.56 = 1,295.47/x
3. Step 3: Cross multiply
   2,290.15x = 3,160.56 × 1,295.47
4. Step 4: Simplify right side
   2,290.15x = 4,094,410.66
5. Step 5: Solve for x
   x = 4,094,410.66/2,290.15
6. Step 6: Final answer
   x = 1,787.84