Finding the Fourth Proportional to 1,452.60, 2,180.52 and 1,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.60 : 2,180.52 = 1,386.72 : x
2. Step 2: Convert to fraction form
   1,452.60/2,180.52 = 1,386.72/x
3. Step 3: Cross multiply
   1,452.60x = 2,180.52 × 1,386.72
4. Step 4: Simplify right side
   1,452.60x = 3,023,770.69
5. Step 5: Solve for x
   x = 3,023,770.69/1,452.60
6. Step 6: Final answer
   x = 2,081.63