Finding the Fourth Proportional to 2,188.50, 3,021 and 1,402.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.50 : 3,021 = 1,402.38 : x
2. Step 2: Convert to fraction form
   2,188.50/3,021 = 1,402.38/x
3. Step 3: Cross multiply
   2,188.50x = 3,021 × 1,402.38
4. Step 4: Simplify right side
   2,188.50x = 4,236,589.98
5. Step 5: Solve for x
   x = 4,236,589.98/2,188.50
6. Step 6: Final answer
   x = 1,935.84