Finding the Fourth Proportional to 1,064.07, 1,469.34 and 784.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.07 : 1,469.34 = 784.79 : x
2. Step 2: Convert to fraction form
   1,064.07/1,469.34 = 784.79/x
3. Step 3: Cross multiply
   1,064.07x = 1,469.34 × 784.79
4. Step 4: Simplify right side
   1,064.07x = 1,153,121.50
5. Step 5: Solve for x
   x = 1,153,121.50/1,064.07
6. Step 6: Final answer
   x = 1,083.69