Finding the Fourth Proportional to 2,603.33, 3,591.12 and 1,607.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.33 : 3,591.12 = 1,607.90 : x
2. Step 2: Convert to fraction form
   2,603.33/3,591.12 = 1,607.90/x
3. Step 3: Cross multiply
   2,603.33x = 3,591.12 × 1,607.90
4. Step 4: Simplify right side
   2,603.33x = 5,774,143.89
5. Step 5: Solve for x
   x = 5,774,143.89/2,603.33
6. Step 6: Final answer
   x = 2,217.99