Finding the Fourth Proportional to 1,978.83, 2,732.03 and 1,270.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.83 : 2,732.03 = 1,270.99 : x
2. Step 2: Convert to fraction form
   1,978.83/2,732.03 = 1,270.99/x
3. Step 3: Cross multiply
   1,978.83x = 2,732.03 × 1,270.99
4. Step 4: Simplify right side
   1,978.83x = 3,472,384.64
5. Step 5: Solve for x
   x = 3,472,384.64/1,978.83
6. Step 6: Final answer
   x = 1,754.77