Finding the Fourth Proportional to 1,381.86, 2,069.13 and 730.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,381.86 : 2,069.13 = 730.62 : x
2. Step 2: Convert to fraction form
   1,381.86/2,069.13 = 730.62/x
3. Step 3: Cross multiply
   1,381.86x = 2,069.13 × 730.62
4. Step 4: Simplify right side
   1,381.86x = 1,511,747.76
5. Step 5: Solve for x
   x = 1,511,747.76/1,381.86
6. Step 6: Final answer
   x = 1,093.99