Finding the Fourth Proportional to 2,188.07, 3,282.52 and 707.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.07 : 3,282.52 = 707.69 : x
2. Step 2: Convert to fraction form
   2,188.07/3,282.52 = 707.69/x
3. Step 3: Cross multiply
   2,188.07x = 3,282.52 × 707.69
4. Step 4: Simplify right side
   2,188.07x = 2,323,006.58
5. Step 5: Solve for x
   x = 2,323,006.58/2,188.07
6. Step 6: Final answer
   x = 1,061.67