Finding the Fourth Proportional to 2,045.60, 3,069.61 and 1,072.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.60 : 3,069.61 = 1,072.25 : x
2. Step 2: Convert to fraction form
   2,045.60/3,069.61 = 1,072.25/x
3. Step 3: Cross multiply
   2,045.60x = 3,069.61 × 1,072.25
4. Step 4: Simplify right side
   2,045.60x = 3,291,371.29
5. Step 5: Solve for x
   x = 3,291,371.29/2,045.60
6. Step 6: Final answer
   x = 1,609.00