Finding the Fourth Proportional to 1,015.98, 1,402.12 and 573.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.98 : 1,402.12 = 573.72 : x
2. Step 2: Convert to fraction form
   1,015.98/1,402.12 = 573.72/x
3. Step 3: Cross multiply
   1,015.98x = 1,402.12 × 573.72
4. Step 4: Simplify right side
   1,015.98x = 804,424.29
5. Step 5: Solve for x
   x = 804,424.29/1,015.98
6. Step 6: Final answer
   x = 791.77