Finding the Fourth Proportional to 2,056.16, 2,837.58 and 1,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.16 : 2,837.58 = 1,172.10 : x
2. Step 2: Convert to fraction form
   2,056.16/2,837.58 = 1,172.10/x
3. Step 3: Cross multiply
   2,056.16x = 2,837.58 × 1,172.10
4. Step 4: Simplify right side
   2,056.16x = 3,325,927.52
5. Step 5: Solve for x
   x = 3,325,927.52/2,056.16
6. Step 6: Final answer
   x = 1,617.54