Finding the Fourth Proportional to 1,646.31, 2,269.31 and 1,055.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.31 : 2,269.31 = 1,055.82 : x
2. Step 2: Convert to fraction form
   1,646.31/2,269.31 = 1,055.82/x
3. Step 3: Cross multiply
   1,646.31x = 2,269.31 × 1,055.82
4. Step 4: Simplify right side
   1,646.31x = 2,395,977.61
5. Step 5: Solve for x
   x = 2,395,977.61/1,646.31
6. Step 6: Final answer
   x = 1,455.36