Finding the Fourth Proportional to 2,298.40, 3,168.96 and 1,878.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.40 : 3,168.96 = 1,878.32 : x
2. Step 2: Convert to fraction form
   2,298.40/3,168.96 = 1,878.32/x
3. Step 3: Cross multiply
   2,298.40x = 3,168.96 × 1,878.32
4. Step 4: Simplify right side
   2,298.40x = 5,952,320.95
5. Step 5: Solve for x
   x = 5,952,320.95/2,298.40
6. Step 6: Final answer
   x = 2,589.77