Finding the Fourth Proportional to 1,105.28, 1,525.32 and 607.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.28 : 1,525.32 = 607.94 : x
2. Step 2: Convert to fraction form
   1,105.28/1,525.32 = 607.94/x
3. Step 3: Cross multiply
   1,105.28x = 1,525.32 × 607.94
4. Step 4: Simplify right side
   1,105.28x = 927,303.04
5. Step 5: Solve for x
   x = 927,303.04/1,105.28
6. Step 6: Final answer
   x = 838.98