Finding the Fourth Proportional to 2,637.90, 3,643.92 and 2,056.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.90 : 3,643.92 = 2,056.05 : x
2. Step 2: Convert to fraction form
   2,637.90/3,643.92 = 2,056.05/x
3. Step 3: Cross multiply
   2,637.90x = 3,643.92 × 2,056.05
4. Step 4: Simplify right side
   2,637.90x = 7,492,081.72
5. Step 5: Solve for x
   x = 7,492,081.72/2,637.90
6. Step 6: Final answer
   x = 2,840.17