Finding the Fourth Proportional to 1,379.86, 2,068.71 and 730.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.86 : 2,068.71 = 730.24 : x
2. Step 2: Convert to fraction form
   1,379.86/2,068.71 = 730.24/x
3. Step 3: Cross multiply
   1,379.86x = 2,068.71 × 730.24
4. Step 4: Simplify right side
   1,379.86x = 1,510,654.79
5. Step 5: Solve for x
   x = 1,510,654.79/1,379.86
6. Step 6: Final answer
   x = 1,094.79