Finding the Fourth Proportional to 1,015.95, 1,401.98 and 573.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.95 : 1,401.98 = 573.87 : x
2. Step 2: Convert to fraction form
   1,015.95/1,401.98 = 573.87/x
3. Step 3: Cross multiply
   1,015.95x = 1,401.98 × 573.87
4. Step 4: Simplify right side
   1,015.95x = 804,551.39
5. Step 5: Solve for x
   x = 804,551.39/1,015.95
6. Step 6: Final answer
   x = 791.92