Finding the Fourth Proportional to 1,898.81, 2,620.37 and 1,059.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.81 : 2,620.37 = 1,059.56 : x
2. Step 2: Convert to fraction form
   1,898.81/2,620.37 = 1,059.56/x
3. Step 3: Cross multiply
   1,898.81x = 2,620.37 × 1,059.56
4. Step 4: Simplify right side
   1,898.81x = 2,776,447.39
5. Step 5: Solve for x
   x = 2,776,447.39/1,898.81
6. Step 6: Final answer
   x = 1,462.20