Finding the Fourth Proportional to 3,158.06, 4,357.61 and 1,898.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,158.06 : 4,357.61 = 1,898.81 : x
2. Step 2: Convert to fraction form
   3,158.06/4,357.61 = 1,898.81/x
3. Step 3: Cross multiply
   3,158.06x = 4,357.61 × 1,898.81
4. Step 4: Simplify right side
   3,158.06x = 8,274,300.82
5. Step 5: Solve for x
   x = 8,274,300.82/3,158.06
6. Step 6: Final answer
   x = 2,620.06