Finding the Fourth Proportional to 1,112.92, 1,536.72 and 693.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112.92 : 1,536.72 = 693.88 : x
2. Step 2: Convert to fraction form
   1,112.92/1,536.72 = 693.88/x
3. Step 3: Cross multiply
   1,112.92x = 1,536.72 × 693.88
4. Step 4: Simplify right side
   1,112.92x = 1,066,299.27
5. Step 5: Solve for x
   x = 1,066,299.27/1,112.92
6. Step 6: Final answer
   x = 958.11