Finding the Fourth Proportional to 2,890.31, 3,962.59 and 2,837.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.31 : 3,962.59 = 2,837.77 : x
2. Step 2: Convert to fraction form
   2,890.31/3,962.59 = 2,837.77/x
3. Step 3: Cross multiply
   2,890.31x = 3,962.59 × 2,837.77
4. Step 4: Simplify right side
   2,890.31x = 11,244,902.02
5. Step 5: Solve for x
   x = 11,244,902.02/2,890.31
6. Step 6: Final answer
   x = 3,890.56