Finding the Fourth Proportional to 1,071.75, 1,477.89 and 699.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.75 : 1,477.89 = 699.06 : x
2. Step 2: Convert to fraction form
   1,071.75/1,477.89 = 699.06/x
3. Step 3: Cross multiply
   1,071.75x = 1,477.89 × 699.06
4. Step 4: Simplify right side
   1,071.75x = 1,033,133.78
5. Step 5: Solve for x
   x = 1,033,133.78/1,071.75
6. Step 6: Final answer
   x = 963.97