Finding the Fourth Proportional to 885.78, 1,219.59 and 752.72

Step by Step Solution

1. Step 1: Write the proportion equation
   885.78 : 1,219.59 = 752.72 : x
2. Step 2: Convert to fraction form
   885.78/1,219.59 = 752.72/x
3. Step 3: Cross multiply
   885.78x = 1,219.59 × 752.72
4. Step 4: Simplify right side
   885.78x = 918,003.69
5. Step 5: Solve for x
   x = 918,003.69/885.78
6. Step 6: Final answer
   x = 1,036.38