Finding the Fourth Proportional to 2,128.94, 3,188.82 and 1,152.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.94 : 3,188.82 = 1,152.98 : x
2. Step 2: Convert to fraction form
   2,128.94/3,188.82 = 1,152.98/x
3. Step 3: Cross multiply
   2,128.94x = 3,188.82 × 1,152.98
4. Step 4: Simplify right side
   2,128.94x = 3,676,645.68
5. Step 5: Solve for x
   x = 3,676,645.68/2,128.94
6. Step 6: Final answer
   x = 1,726.98