Finding the Fourth Proportional to 2,128.07, 3,194.04 and 1,088.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.07 : 3,194.04 = 1,088.81 : x
2. Step 2: Convert to fraction form
   2,128.07/3,194.04 = 1,088.81/x
3. Step 3: Cross multiply
   2,128.07x = 3,194.04 × 1,088.81
4. Step 4: Simplify right side
   2,128.07x = 3,477,702.69
5. Step 5: Solve for x
   x = 3,477,702.69/2,128.07
6. Step 6: Final answer
   x = 1,634.21