Finding the Fourth Proportional to 1,377.50, 1,900.23 and 879.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.50 : 1,900.23 = 879.26 : x
2. Step 2: Convert to fraction form
   1,377.50/1,900.23 = 879.26/x
3. Step 3: Cross multiply
   1,377.50x = 1,900.23 × 879.26
4. Step 4: Simplify right side
   1,377.50x = 1,670,796.23
5. Step 5: Solve for x
   x = 1,670,796.23/1,377.50
6. Step 6: Final answer
   x = 1,212.92