Finding the Fourth Proportional to 2,056.41, 2,837.68 and 1,172.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.41 : 2,837.68 = 1,172.05 : x
2. Step 2: Convert to fraction form
   2,056.41/2,837.68 = 1,172.05/x
3. Step 3: Cross multiply
   2,056.41x = 2,837.68 × 1,172.05
4. Step 4: Simplify right side
   2,056.41x = 3,325,892.82
5. Step 5: Solve for x
   x = 3,325,892.82/2,056.41
6. Step 6: Final answer
   x = 1,617.33