Finding the Fourth Proportional to 2,259.69, 3,388.76 and 1,073.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.69 : 3,388.76 = 1,073.60 : x
2. Step 2: Convert to fraction form
   2,259.69/3,388.76 = 1,073.60/x
3. Step 3: Cross multiply
   2,259.69x = 3,388.76 × 1,073.60
4. Step 4: Simplify right side
   2,259.69x = 3,638,153.11
5. Step 5: Solve for x
   x = 3,638,153.11/2,259.69
6. Step 6: Final answer
   x = 1,610.02