Finding the Fourth Proportional to 1,509.90, 2,083.71 and 846.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,509.90 : 2,083.71 = 846.72 : x
2. Step 2: Convert to fraction form
   1,509.90/2,083.71 = 846.72/x
3. Step 3: Cross multiply
   1,509.90x = 2,083.71 × 846.72
4. Step 4: Simplify right side
   1,509.90x = 1,764,318.93
5. Step 5: Solve for x
   x = 1,764,318.93/1,509.90
6. Step 6: Final answer
   x = 1,168.50