Finding the Fourth Proportional to 1,362.84, 1,880.70 and 803.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.84 : 1,880.70 = 803.30 : x
2. Step 2: Convert to fraction form
   1,362.84/1,880.70 = 803.30/x
3. Step 3: Cross multiply
   1,362.84x = 1,880.70 × 803.30
4. Step 4: Simplify right side
   1,362.84x = 1,510,766.31
5. Step 5: Solve for x
   x = 1,510,766.31/1,362.84
6. Step 6: Final answer
   x = 1,108.54