Finding the Fourth Proportional to 2,253.42, 3,380.94 and 1,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.42 : 3,380.94 = 1,386.72 : x
2. Step 2: Convert to fraction form
   2,253.42/3,380.94 = 1,386.72/x
3. Step 3: Cross multiply
   2,253.42x = 3,380.94 × 1,386.72
4. Step 4: Simplify right side
   2,253.42x = 4,688,417.12
5. Step 5: Solve for x
   x = 4,688,417.12/2,253.42
6. Step 6: Final answer
   x = 2,080.58