Finding the Fourth Proportional to 1,603.77, 2,404.43 and 1,082.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603.77 : 2,404.43 = 1,082.31 : x
2. Step 2: Convert to fraction form
   1,603.77/2,404.43 = 1,082.31/x
3. Step 3: Cross multiply
   1,603.77x = 2,404.43 × 1,082.31
4. Step 4: Simplify right side
   1,603.77x = 2,602,347.88
5. Step 5: Solve for x
   x = 2,602,347.88/1,603.77
6. Step 6: Final answer
   x = 1,622.64