Finding the Fourth Proportional to 1,259.69, 1,888.05 and 739.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.69 : 1,888.05 = 739.94 : x
2. Step 2: Convert to fraction form
   1,259.69/1,888.05 = 739.94/x
3. Step 3: Cross multiply
   1,259.69x = 1,888.05 × 739.94
4. Step 4: Simplify right side
   1,259.69x = 1,397,043.72
5. Step 5: Solve for x
   x = 1,397,043.72/1,259.69
6. Step 6: Final answer
   x = 1,109.04