Finding the Fourth Proportional to 1,344.76, 1,855.76 and 847.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.76 : 1,855.76 = 847.72 : x
2. Step 2: Convert to fraction form
   1,344.76/1,855.76 = 847.72/x
3. Step 3: Cross multiply
   1,344.76x = 1,855.76 × 847.72
4. Step 4: Simplify right side
   1,344.76x = 1,573,164.87
5. Step 5: Solve for x
   x = 1,573,164.87/1,344.76
6. Step 6: Final answer
   x = 1,169.85