Finding the Fourth Proportional to 1,607.83, 2,411.99 and 828.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,607.83 : 2,411.99 = 828.29 : x
2. Step 2: Convert to fraction form
   1,607.83/2,411.99 = 828.29/x
3. Step 3: Cross multiply
   1,607.83x = 2,411.99 × 828.29
4. Step 4: Simplify right side
   1,607.83x = 1,997,827.20
5. Step 5: Solve for x
   x = 1,997,827.20/1,607.83
6. Step 6: Final answer
   x = 1,242.56