Finding the Fourth Proportional to 2,131.31, 3,193.96 and 1,603.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.31 : 3,193.96 = 1,603.87 : x
2. Step 2: Convert to fraction form
   2,131.31/3,193.96 = 1,603.87/x
3. Step 3: Cross multiply
   2,131.31x = 3,193.96 × 1,603.87
4. Step 4: Simplify right side
   2,131.31x = 5,122,699.98
5. Step 5: Solve for x
   x = 5,122,699.98/2,131.31
6. Step 6: Final answer
   x = 2,403.54