Finding the Fourth Proportional to 2,600.73, 3,898.94 and 1,213.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,600.73 : 3,898.94 = 1,213.34 : x
2. Step 2: Convert to fraction form
   2,600.73/3,898.94 = 1,213.34/x
3. Step 3: Cross multiply
   2,600.73x = 3,898.94 × 1,213.34
4. Step 4: Simplify right side
   2,600.73x = 4,730,714.30
5. Step 5: Solve for x
   x = 4,730,714.30/2,600.73
6. Step 6: Final answer
   x = 1,818.99