Finding the Fourth Proportional to 3,789.78, 5,230.32 and 2,298.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.78 : 5,230.32 = 2,298.18 : x
2. Step 2: Convert to fraction form
   3,789.78/5,230.32 = 2,298.18/x
3. Step 3: Cross multiply
   3,789.78x = 5,230.32 × 2,298.18
4. Step 4: Simplify right side
   3,789.78x = 12,020,216.82
5. Step 5: Solve for x
   x = 12,020,216.82/3,789.78
6. Step 6: Final answer
   x = 3,171.75