Finding the Fourth Proportional to 1,362.19, 1,880.33 and 865.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.19 : 1,880.33 = 865.15 : x
2. Step 2: Convert to fraction form
   1,362.19/1,880.33 = 865.15/x
3. Step 3: Cross multiply
   1,362.19x = 1,880.33 × 865.15
4. Step 4: Simplify right side
   1,362.19x = 1,626,763.17
5. Step 5: Solve for x
   x = 1,626,763.17/1,362.19
6. Step 6: Final answer
   x = 1,194.23