Finding the Fourth Proportional to 2,056.53, 2,838.24 and 1,172.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,056.53 : 2,838.24 = 1,172.55 : x
2. Step 2: Convert to fraction form
   2,056.53/2,838.24 = 1,172.55/x
3. Step 3: Cross multiply
   2,056.53x = 2,838.24 × 1,172.55
4. Step 4: Simplify right side
   2,056.53x = 3,327,978.31
5. Step 5: Solve for x
   x = 3,327,978.31/2,056.53
6. Step 6: Final answer
   x = 1,618.25