Finding the Fourth Proportional to 2,142.45, 3,003.75 and 2,142.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.45 : 3,003.75 = 2,142.45 : x
2. Step 2: Convert to fraction form
   2,142.45/3,003.75 = 2,142.45/x
3. Step 3: Cross multiply
   2,142.45x = 3,003.75 × 2,142.45
4. Step 4: Simplify right side
   2,142.45x = 6,435,384.19
5. Step 5: Solve for x
   x = 6,435,384.19/2,142.45
6. Step 6: Final answer
   x = 3,003.75