Finding the Fourth Proportional to 1,978.87, 2,730.08 and 1,270.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.87 : 2,730.08 = 1,270.53 : x
2. Step 2: Convert to fraction form
   1,978.87/2,730.08 = 1,270.53/x
3. Step 3: Cross multiply
   1,978.87x = 2,730.08 × 1,270.53
4. Step 4: Simplify right side
   1,978.87x = 3,468,638.54
5. Step 5: Solve for x
   x = 3,468,638.54/1,978.87
6. Step 6: Final answer
   x = 1,752.84