Finding the Fourth Proportional to 1,877.59, 2,814.49 and 1,392.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.59 : 2,814.49 = 1,392.81 : x
2. Step 2: Convert to fraction form
   1,877.59/2,814.49 = 1,392.81/x
3. Step 3: Cross multiply
   1,877.59x = 2,814.49 × 1,392.81
4. Step 4: Simplify right side
   1,877.59x = 3,920,049.82
5. Step 5: Solve for x
   x = 3,920,049.82/1,877.59
6. Step 6: Final answer
   x = 2,087.81