Finding the Fourth Proportional to 1,406.04, 1,940.04 and 882.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.04 : 1,940.04 = 882.78 : x
2. Step 2: Convert to fraction form
   1,406.04/1,940.04 = 882.78/x
3. Step 3: Cross multiply
   1,406.04x = 1,940.04 × 882.78
4. Step 4: Simplify right side
   1,406.04x = 1,712,628.51
5. Step 5: Solve for x
   x = 1,712,628.51/1,406.04
6. Step 6: Final answer
   x = 1,218.05