Finding the Fourth Proportional to 3,477.83, 5,209.78 and 2,090.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,477.83 : 5,209.78 = 2,090.41 : x
2. Step 2: Convert to fraction form
   3,477.83/5,209.78 = 2,090.41/x
3. Step 3: Cross multiply
   3,477.83x = 5,209.78 × 2,090.41
4. Step 4: Simplify right side
   3,477.83x = 10,890,539.71
5. Step 5: Solve for x
   x = 10,890,539.71/3,477.83
6. Step 6: Final answer
   x = 3,131.42