Finding the Fourth Proportional to 1,085.52, 1,497.78 and 693.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.52 : 1,497.78 = 693.12 : x
2. Step 2: Convert to fraction form
   1,085.52/1,497.78 = 693.12/x
3. Step 3: Cross multiply
   1,085.52x = 1,497.78 × 693.12
4. Step 4: Simplify right side
   1,085.52x = 1,038,141.27
5. Step 5: Solve for x
   x = 1,038,141.27/1,085.52
6. Step 6: Final answer
   x = 956.35