Finding the Fourth Proportional to 2,045.85, 3,069.68 and 1,071.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.85 : 3,069.68 = 1,071.72 : x
2. Step 2: Convert to fraction form
   2,045.85/3,069.68 = 1,071.72/x
3. Step 3: Cross multiply
   2,045.85x = 3,069.68 × 1,071.72
4. Step 4: Simplify right side
   2,045.85x = 3,289,837.45
5. Step 5: Solve for x
   x = 3,289,837.45/2,045.85
6. Step 6: Final answer
   x = 1,608.05