Finding the Fourth Proportional to 2,003.55, 2,801.32 and 2,003.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.55 : 2,801.32 = 2,003.55 : x
2. Step 2: Convert to fraction form
   2,003.55/2,801.32 = 2,003.55/x
3. Step 3: Cross multiply
   2,003.55x = 2,801.32 × 2,003.55
4. Step 4: Simplify right side
   2,003.55x = 5,612,584.69
5. Step 5: Solve for x
   x = 5,612,584.69/2,003.55
6. Step 6: Final answer
   x = 2,801.32