Finding the Fourth Proportional to 2,146.21, 3,215.42 and 1,801.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.21 : 3,215.42 = 1,801.76 : x
2. Step 2: Convert to fraction form
   2,146.21/3,215.42 = 1,801.76/x
3. Step 3: Cross multiply
   2,146.21x = 3,215.42 × 1,801.76
4. Step 4: Simplify right side
   2,146.21x = 5,793,403.57
5. Step 5: Solve for x
   x = 5,793,403.57/2,146.21
6. Step 6: Final answer
   x = 2,699.37