Finding the Fourth Proportional to 1,598.51, 2,398.43 and 765.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.51 : 2,398.43 = 765.15 : x
2. Step 2: Convert to fraction form
   1,598.51/2,398.43 = 765.15/x
3. Step 3: Cross multiply
   1,598.51x = 2,398.43 × 765.15
4. Step 4: Simplify right side
   1,598.51x = 1,835,164.12
5. Step 5: Solve for x
   x = 1,835,164.12/1,598.51
6. Step 6: Final answer
   x = 1,148.05