Finding the Fourth Proportional to 3,876.95, 5,813.47 and 1,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,876.95 : 5,813.47 = 1,902.72 : x
2. Step 2: Convert to fraction form
   3,876.95/5,813.47 = 1,902.72/x
3. Step 3: Cross multiply
   3,876.95x = 5,813.47 × 1,902.72
4. Step 4: Simplify right side
   3,876.95x = 11,061,429.82
5. Step 5: Solve for x
   x = 11,061,429.82/3,876.95
6. Step 6: Final answer
   x = 2,853.13