Finding the Fourth Proportional to 1,386.50, 2,080.49 and 924.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.50 : 2,080.49 = 924.53 : x
2. Step 2: Convert to fraction form
   1,386.50/2,080.49 = 924.53/x
3. Step 3: Cross multiply
   1,386.50x = 2,080.49 × 924.53
4. Step 4: Simplify right side
   1,386.50x = 1,923,460.39
5. Step 5: Solve for x
   x = 1,923,460.39/1,386.50
6. Step 6: Final answer
   x = 1,387.28