Finding the Fourth Proportional to 2,427.39, 3,642.39 and 1,128.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,427.39 : 3,642.39 = 1,128.75 : x
2. Step 2: Convert to fraction form
   2,427.39/3,642.39 = 1,128.75/x
3. Step 3: Cross multiply
   2,427.39x = 3,642.39 × 1,128.75
4. Step 4: Simplify right side
   2,427.39x = 4,111,347.71
5. Step 5: Solve for x
   x = 4,111,347.71/2,427.39
6. Step 6: Final answer
   x = 1,693.73