Finding the Fourth Proportional to 2,261.61, 3,389.94 and 1,164.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.61 : 3,389.94 = 1,164.51 : x
2. Step 2: Convert to fraction form
   2,261.61/3,389.94 = 1,164.51/x
3. Step 3: Cross multiply
   2,261.61x = 3,389.94 × 1,164.51
4. Step 4: Simplify right side
   2,261.61x = 3,947,619.03
5. Step 5: Solve for x
   x = 3,947,619.03/2,261.61
6. Step 6: Final answer
   x = 1,745.49