Finding the Fourth Proportional to 1,745.69, 2,617.58 and 866.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,745.69 : 2,617.58 = 866.25 : x
2. Step 2: Convert to fraction form
   1,745.69/2,617.58 = 866.25/x
3. Step 3: Cross multiply
   1,745.69x = 2,617.58 × 866.25
4. Step 4: Simplify right side
   1,745.69x = 2,267,492.81
5. Step 5: Solve for x
   x = 2,267,492.81/1,745.69
6. Step 6: Final answer
   x = 1,298.91