Finding the Fourth Proportional to 1,011.93, 1,518.72 and 525.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.93 : 1,518.72 = 525.12 : x
2. Step 2: Convert to fraction form
   1,011.93/1,518.72 = 525.12/x
3. Step 3: Cross multiply
   1,011.93x = 1,518.72 × 525.12
4. Step 4: Simplify right side
   1,011.93x = 797,510.25
5. Step 5: Solve for x
   x = 797,510.25/1,011.93
6. Step 6: Final answer
   x = 788.11