Finding the Fourth Proportional to 1,360.89, 1,877.31 and 862.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.89 : 1,877.31 = 862.67 : x
2. Step 2: Convert to fraction form
   1,360.89/1,877.31 = 862.67/x
3. Step 3: Cross multiply
   1,360.89x = 1,877.31 × 862.67
4. Step 4: Simplify right side
   1,360.89x = 1,619,503.71
5. Step 5: Solve for x
   x = 1,619,503.71/1,360.89
6. Step 6: Final answer
   x = 1,190.03