Finding the Fourth Proportional to 2,290.31, 3,160.57 and 1,295.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.31 : 3,160.57 = 1,295.56 : x
2. Step 2: Convert to fraction form
   2,290.31/3,160.57 = 1,295.56/x
3. Step 3: Cross multiply
   2,290.31x = 3,160.57 × 1,295.56
4. Step 4: Simplify right side
   2,290.31x = 4,094,708.07
5. Step 5: Solve for x
   x = 4,094,708.07/2,290.31
6. Step 6: Final answer
   x = 1,787.84