Finding the Fourth Proportional to 1,940.30, 2,677.57 and 1,056.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.30 : 2,677.57 = 1,056.12 : x
2. Step 2: Convert to fraction form
   1,940.30/2,677.57 = 1,056.12/x
3. Step 3: Cross multiply
   1,940.30x = 2,677.57 × 1,056.12
4. Step 4: Simplify right side
   1,940.30x = 2,827,843.55
5. Step 5: Solve for x
   x = 2,827,843.55/1,940.30
6. Step 6: Final answer
   x = 1,457.42