Finding the Fourth Proportional to 1,064.61, 1,469.88 and 692.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.61 : 1,469.88 = 692.15 : x
2. Step 2: Convert to fraction form
   1,064.61/1,469.88 = 692.15/x
3. Step 3: Cross multiply
   1,064.61x = 1,469.88 × 692.15
4. Step 4: Simplify right side
   1,064.61x = 1,017,370.09
5. Step 5: Solve for x
   x = 1,017,370.09/1,064.61
6. Step 6: Final answer
   x = 955.63