Finding the Fourth Proportional to 2,235.52, 3,081.63 and 1,645.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.52 : 3,081.63 = 1,645.03 : x
2. Step 2: Convert to fraction form
   2,235.52/3,081.63 = 1,645.03/x
3. Step 3: Cross multiply
   2,235.52x = 3,081.63 × 1,645.03
4. Step 4: Simplify right side
   2,235.52x = 5,069,373.80
5. Step 5: Solve for x
   x = 5,069,373.80/2,235.52
6. Step 6: Final answer
   x = 2,267.65