Finding the Fourth Proportional to 1,903.62, 2,851.38 and 1,081.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.62 : 2,851.38 = 1,081.47 : x
2. Step 2: Convert to fraction form
   1,903.62/2,851.38 = 1,081.47/x
3. Step 3: Cross multiply
   1,903.62x = 2,851.38 × 1,081.47
4. Step 4: Simplify right side
   1,903.62x = 3,083,681.93
5. Step 5: Solve for x
   x = 3,083,681.93/1,903.62
6. Step 6: Final answer
   x = 1,619.90