Finding the Fourth Proportional to 1,408.46, 1,944.62 and 877.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.46 : 1,944.62 = 877.55 : x
2. Step 2: Convert to fraction form
   1,408.46/1,944.62 = 877.55/x
3. Step 3: Cross multiply
   1,408.46x = 1,944.62 × 877.55
4. Step 4: Simplify right side
   1,408.46x = 1,706,506.34
5. Step 5: Solve for x
   x = 1,706,506.34/1,408.46
6. Step 6: Final answer
   x = 1,211.62