Finding the Fourth Proportional to 2,290.48, 3,160.67 and 1,295.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.48 : 3,160.67 = 1,295.55 : x
2. Step 2: Convert to fraction form
   2,290.48/3,160.67 = 1,295.55/x
3. Step 3: Cross multiply
   2,290.48x = 3,160.67 × 1,295.55
4. Step 4: Simplify right side
   2,290.48x = 4,094,799.54
5. Step 5: Solve for x
   x = 4,094,799.54/2,290.48
6. Step 6: Final answer
   x = 1,787.75