Finding the Fourth Proportional to 1,011.92, 1,518.83 and 525.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.92 : 1,518.83 = 525.31 : x
2. Step 2: Convert to fraction form
   1,011.92/1,518.83 = 525.31/x
3. Step 3: Cross multiply
   1,011.92x = 1,518.83 × 525.31
4. Step 4: Simplify right side
   1,011.92x = 797,857.76
5. Step 5: Solve for x
   x = 797,857.76/1,011.92
6. Step 6: Final answer
   x = 788.46