Finding the Fourth Proportional to 2,520.35, 3,773.58 and 1,902.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.35 : 3,773.58 = 1,902.20 : x
2. Step 2: Convert to fraction form
   2,520.35/3,773.58 = 1,902.20/x
3. Step 3: Cross multiply
   2,520.35x = 3,773.58 × 1,902.20
4. Step 4: Simplify right side
   2,520.35x = 7,178,103.88
5. Step 5: Solve for x
   x = 7,178,103.88/2,520.35
6. Step 6: Final answer
   x = 2,848.06