Finding the Fourth Proportional to 1,898.96, 2,826.30 and 1,880.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,898.96 : 2,826.30 = 1,880.72 : x
2. Step 2: Convert to fraction form
   1,898.96/2,826.30 = 1,880.72/x
3. Step 3: Cross multiply
   1,898.96x = 2,826.30 × 1,880.72
4. Step 4: Simplify right side
   1,898.96x = 5,315,478.94
5. Step 5: Solve for x
   x = 5,315,478.94/1,898.96
6. Step 6: Final answer
   x = 2,799.15