Finding the Fourth Proportional to 1,973.78, 2,723.83 and 1,089.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.78 : 2,723.83 = 1,089.61 : x
2. Step 2: Convert to fraction form
   1,973.78/2,723.83 = 1,089.61/x
3. Step 3: Cross multiply
   1,973.78x = 2,723.83 × 1,089.61
4. Step 4: Simplify right side
   1,973.78x = 2,967,912.41
5. Step 5: Solve for x
   x = 2,967,912.41/1,973.78
6. Step 6: Final answer
   x = 1,503.67