Finding the Fourth Proportional to 1,976.84, 2,728.31 and 1,137.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.84 : 2,728.31 = 1,137.53 : x
2. Step 2: Convert to fraction form
   1,976.84/2,728.31 = 1,137.53/x
3. Step 3: Cross multiply
   1,976.84x = 2,728.31 × 1,137.53
4. Step 4: Simplify right side
   1,976.84x = 3,103,519.41
5. Step 5: Solve for x
   x = 3,103,519.41/1,976.84
6. Step 6: Final answer
   x = 1,569.94