Finding the Fourth Proportional to 1,069.61, 1,476.53 and 696.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.61 : 1,476.53 = 696.50 : x
2. Step 2: Convert to fraction form
   1,069.61/1,476.53 = 696.50/x
3. Step 3: Cross multiply
   1,069.61x = 1,476.53 × 696.50
4. Step 4: Simplify right side
   1,069.61x = 1,028,400.43
5. Step 5: Solve for x
   x = 1,028,400.43/1,069.61
6. Step 6: Final answer
   x = 961.48