Finding the Fourth Proportional to 1,009.72, 1,512.72 and 700.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.72 : 1,512.72 = 700.88 : x
2. Step 2: Convert to fraction form
   1,009.72/1,512.72 = 700.88/x
3. Step 3: Cross multiply
   1,009.72x = 1,512.72 × 700.88
4. Step 4: Simplify right side
   1,009.72x = 1,060,235.19
5. Step 5: Solve for x
   x = 1,060,235.19/1,009.72
6. Step 6: Final answer
   x = 1,050.03