Finding the Fourth Proportional to 2,031.42, 2,803.42 and 1,147.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.42 : 2,803.42 = 1,147.28 : x
2. Step 2: Convert to fraction form
   2,031.42/2,803.42 = 1,147.28/x
3. Step 3: Cross multiply
   2,031.42x = 2,803.42 × 1,147.28
4. Step 4: Simplify right side
   2,031.42x = 3,216,307.70
5. Step 5: Solve for x
   x = 3,216,307.70/2,031.42
6. Step 6: Final answer
   x = 1,583.28