Finding the Fourth Proportional to 1,016.42, 1,525.88 and 1,011.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.42 : 1,525.88 = 1,011.74 : x
2. Step 2: Convert to fraction form
   1,016.42/1,525.88 = 1,011.74/x
3. Step 3: Cross multiply
   1,016.42x = 1,525.88 × 1,011.74
4. Step 4: Simplify right side
   1,016.42x = 1,543,788.73
5. Step 5: Solve for x
   x = 1,543,788.73/1,016.42
6. Step 6: Final answer
   x = 1,518.86