Finding the Fourth Proportional to 1,015.90, 1,401.89 and 573.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.90 : 1,401.89 = 573.82 : x
2. Step 2: Convert to fraction form
   1,015.90/1,401.89 = 573.82/x
3. Step 3: Cross multiply
   1,015.90x = 1,401.89 × 573.82
4. Step 4: Simplify right side
   1,015.90x = 804,432.52
5. Step 5: Solve for x
   x = 804,432.52/1,015.90
6. Step 6: Final answer
   x = 791.84