Finding the Fourth Proportional to 1,259.01, 1,736.89 and 786.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.01 : 1,736.89 = 786.61 : x
2. Step 2: Convert to fraction form
   1,259.01/1,736.89 = 786.61/x
3. Step 3: Cross multiply
   1,259.01x = 1,736.89 × 786.61
4. Step 4: Simplify right side
   1,259.01x = 1,366,259.67
5. Step 5: Solve for x
   x = 1,366,259.67/1,259.01
6. Step 6: Final answer
   x = 1,085.19