Finding the Fourth Proportional to 1,001.51, 1,382.18 and 559.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,001.51 : 1,382.18 = 559.43 : x
2. Step 2: Convert to fraction form
   1,001.51/1,382.18 = 559.43/x
3. Step 3: Cross multiply
   1,001.51x = 1,382.18 × 559.43
4. Step 4: Simplify right side
   1,001.51x = 773,223.25
5. Step 5: Solve for x
   x = 773,223.25/1,001.51
6. Step 6: Final answer
   x = 772.06