Finding the Fourth Proportional to 1,687.92, 2,327.80 and 1,314.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,687.92 : 2,327.80 = 1,314.96 : x
2. Step 2: Convert to fraction form
   1,687.92/2,327.80 = 1,314.96/x
3. Step 3: Cross multiply
   1,687.92x = 2,327.80 × 1,314.96
4. Step 4: Simplify right side
   1,687.92x = 3,060,963.89
5. Step 5: Solve for x
   x = 3,060,963.89/1,687.92
6. Step 6: Final answer
   x = 1,813.45