Finding the Fourth Proportional to 3,428.51, 5,142.86 and 1,088.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.51 : 5,142.86 = 1,088.52 : x
2. Step 2: Convert to fraction form
   3,428.51/5,142.86 = 1,088.52/x
3. Step 3: Cross multiply
   3,428.51x = 5,142.86 × 1,088.52
4. Step 4: Simplify right side
   3,428.51x = 5,598,100.52
5. Step 5: Solve for x
   x = 5,598,100.52/3,428.51
6. Step 6: Final answer
   x = 1,632.81