Finding the Fourth Proportional to 2,266.31, 3,128.60 and 1,427.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.31 : 3,128.60 = 1,427.42 : x
2. Step 2: Convert to fraction form
   2,266.31/3,128.60 = 1,427.42/x
3. Step 3: Cross multiply
   2,266.31x = 3,128.60 × 1,427.42
4. Step 4: Simplify right side
   2,266.31x = 4,465,803.43
5. Step 5: Solve for x
   x = 4,465,803.43/2,266.31
6. Step 6: Final answer
   x = 1,970.52