Finding the Fourth Proportional to 1,986.23, 2,737.71 and 1,425.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.23 : 2,737.71 = 1,425.83 : x
2. Step 2: Convert to fraction form
   1,986.23/2,737.71 = 1,425.83/x
3. Step 3: Cross multiply
   1,986.23x = 2,737.71 × 1,425.83
4. Step 4: Simplify right side
   1,986.23x = 3,903,495.36
5. Step 5: Solve for x
   x = 3,903,495.36/1,986.23
6. Step 6: Final answer
   x = 1,965.28