Finding the Fourth Proportional to 2,487.67, 3,430.59 and 1,603.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.67 : 3,430.59 = 1,603.75 : x
2. Step 2: Convert to fraction form
   2,487.67/3,430.59 = 1,603.75/x
3. Step 3: Cross multiply
   2,487.67x = 3,430.59 × 1,603.75
4. Step 4: Simplify right side
   2,487.67x = 5,501,808.71
5. Step 5: Solve for x
   x = 5,501,808.71/2,487.67
6. Step 6: Final answer
   x = 2,211.63