Finding the Fourth Proportional to 1,555.02, 2,147.82 and 1,163.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.02 : 2,147.82 = 1,163.78 : x
2. Step 2: Convert to fraction form
   1,555.02/2,147.82 = 1,163.78/x
3. Step 3: Cross multiply
   1,555.02x = 2,147.82 × 1,163.78
4. Step 4: Simplify right side
   1,555.02x = 2,499,589.96
5. Step 5: Solve for x
   x = 2,499,589.96/1,555.02
6. Step 6: Final answer
   x = 1,607.43