Finding the Fourth Proportional to 2,500.21, 3,450.51 and 1,505.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.21 : 3,450.51 = 1,505.35 : x
2. Step 2: Convert to fraction form
   2,500.21/3,450.51 = 1,505.35/x
3. Step 3: Cross multiply
   2,500.21x = 3,450.51 × 1,505.35
4. Step 4: Simplify right side
   2,500.21x = 5,194,225.23
5. Step 5: Solve for x
   x = 5,194,225.23/2,500.21
6. Step 6: Final answer
   x = 2,077.52