Finding the Fourth Proportional to 1,147.47, 1,721.47 and 591.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.47 : 1,721.47 = 591.96 : x
2. Step 2: Convert to fraction form
   1,147.47/1,721.47 = 591.96/x
3. Step 3: Cross multiply
   1,147.47x = 1,721.47 × 591.96
4. Step 4: Simplify right side
   1,147.47x = 1,019,041.38
5. Step 5: Solve for x
   x = 1,019,041.38/1,147.47
6. Step 6: Final answer
   x = 888.08