Finding the Fourth Proportional to 2,146.02, 3,213.86 and 1,219.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.02 : 3,213.86 = 1,219.31 : x
2. Step 2: Convert to fraction form
   2,146.02/3,213.86 = 1,219.31/x
3. Step 3: Cross multiply
   2,146.02x = 3,213.86 × 1,219.31
4. Step 4: Simplify right side
   2,146.02x = 3,918,691.64
5. Step 5: Solve for x
   x = 3,918,691.64/2,146.02
6. Step 6: Final answer
   x = 1,826.03