Finding the Fourth Proportional to 1,678.73, 2,312.15 and 1,362.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,678.73 : 2,312.15 = 1,362.83 : x
2. Step 2: Convert to fraction form
   1,678.73/2,312.15 = 1,362.83/x
3. Step 3: Cross multiply
   1,678.73x = 2,312.15 × 1,362.83
4. Step 4: Simplify right side
   1,678.73x = 3,151,049.01
5. Step 5: Solve for x
   x = 3,151,049.01/1,678.73
6. Step 6: Final answer
   x = 1,877.05