Finding the Fourth Proportional to 1,898.91, 2,620.59 and 1,059.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.91 : 2,620.59 = 1,059.69 : x
2. Step 2: Convert to fraction form
   1,898.91/2,620.59 = 1,059.69/x
3. Step 3: Cross multiply
   1,898.91x = 2,620.59 × 1,059.69
4. Step 4: Simplify right side
   1,898.91x = 2,777,013.02
5. Step 5: Solve for x
   x = 2,777,013.02/1,898.91
6. Step 6: Final answer
   x = 1,462.42