Finding the Fourth Proportional to 1,400.27, 2,101.28 and 784.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,400.27 : 2,101.28 = 784.36 : x
2. Step 2: Convert to fraction form
   1,400.27/2,101.28 = 784.36/x
3. Step 3: Cross multiply
   1,400.27x = 2,101.28 × 784.36
4. Step 4: Simplify right side
   1,400.27x = 1,648,158.69
5. Step 5: Solve for x
   x = 1,648,158.69/1,400.27
6. Step 6: Final answer
   x = 1,177.03