Finding the Fourth Proportional to 1,940.62, 2,678.12 and 1,056.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,940.62 : 2,678.12 = 1,056.37 : x
2. Step 2: Convert to fraction form
   1,940.62/2,678.12 = 1,056.37/x
3. Step 3: Cross multiply
   1,940.62x = 2,678.12 × 1,056.37
4. Step 4: Simplify right side
   1,940.62x = 2,829,085.62
5. Step 5: Solve for x
   x = 2,829,085.62/1,940.62
6. Step 6: Final answer
   x = 1,457.83