Finding the Fourth Proportional to 1,709.88, 2,566.03 and 786.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.88 : 2,566.03 = 786.48 : x
2. Step 2: Convert to fraction form
   1,709.88/2,566.03 = 786.48/x
3. Step 3: Cross multiply
   1,709.88x = 2,566.03 × 786.48
4. Step 4: Simplify right side
   1,709.88x = 2,018,131.27
5. Step 5: Solve for x
   x = 2,018,131.27/1,709.88
6. Step 6: Final answer
   x = 1,180.28