Finding the Fourth Proportional to 1,344.34, 1,855.28 and 784.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.34 : 1,855.28 = 784.99 : x
2. Step 2: Convert to fraction form
   1,344.34/1,855.28 = 784.99/x
3. Step 3: Cross multiply
   1,344.34x = 1,855.28 × 784.99
4. Step 4: Simplify right side
   1,344.34x = 1,456,376.25
5. Step 5: Solve for x
   x = 1,456,376.25/1,344.34
6. Step 6: Final answer
   x = 1,083.34