Finding the Fourth Proportional to 2,059.98, 2,845.20 and 1,561.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.98 : 2,845.20 = 1,561.51 : x
2. Step 2: Convert to fraction form
   2,059.98/2,845.20 = 1,561.51/x
3. Step 3: Cross multiply
   2,059.98x = 2,845.20 × 1,561.51
4. Step 4: Simplify right side
   2,059.98x = 4,442,808.25
5. Step 5: Solve for x
   x = 4,442,808.25/2,059.98
6. Step 6: Final answer
   x = 2,156.72