Finding the Fourth Proportional to 2,298.12, 3,152.32 and 2,278.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.12 : 3,152.32 = 2,278.35 : x
2. Step 2: Convert to fraction form
   2,298.12/3,152.32 = 2,278.35/x
3. Step 3: Cross multiply
   2,298.12x = 3,152.32 × 2,278.35
4. Step 4: Simplify right side
   2,298.12x = 7,182,082.58
5. Step 5: Solve for x
   x = 7,182,082.58/2,298.12
6. Step 6: Final answer
   x = 3,125.20