Finding the Fourth Proportional to 1,377.48, 1,900.42 and 879.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.48 : 1,900.42 = 879.96 : x
2. Step 2: Convert to fraction form
   1,377.48/1,900.42 = 879.96/x
3. Step 3: Cross multiply
   1,377.48x = 1,900.42 × 879.96
4. Step 4: Simplify right side
   1,377.48x = 1,672,293.58
5. Step 5: Solve for x
   x = 1,672,293.58/1,377.48
6. Step 6: Final answer
   x = 1,214.02