Finding the Fourth Proportional to 2,056.38, 2,837.73 and 1,172.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.38 : 2,837.73 = 1,172.16 : x
2. Step 2: Convert to fraction form
   2,056.38/2,837.73 = 1,172.16/x
3. Step 3: Cross multiply
   2,056.38x = 2,837.73 × 1,172.16
4. Step 4: Simplify right side
   2,056.38x = 3,326,273.60
5. Step 5: Solve for x
   x = 3,326,273.60/2,056.38
6. Step 6: Final answer
   x = 1,617.54