Finding the Fourth Proportional to 2,398.64, 3,594.72 and 1,245.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398.64 : 3,594.72 = 1,245.20 : x
2. Step 2: Convert to fraction form
   2,398.64/3,594.72 = 1,245.20/x
3. Step 3: Cross multiply
   2,398.64x = 3,594.72 × 1,245.20
4. Step 4: Simplify right side
   2,398.64x = 4,476,145.34
5. Step 5: Solve for x
   x = 4,476,145.34/2,398.64
6. Step 6: Final answer
   x = 1,866.12