Finding the Fourth Proportional to 1,380.24, 2,073.60 and 730.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.24 : 2,073.60 = 730.62 : x
2. Step 2: Convert to fraction form
   1,380.24/2,073.60 = 730.62/x
3. Step 3: Cross multiply
   1,380.24x = 2,073.60 × 730.62
4. Step 4: Simplify right side
   1,380.24x = 1,515,013.63
5. Step 5: Solve for x
   x = 1,515,013.63/1,380.24
6. Step 6: Final answer
   x = 1,097.65