Finding the Fourth Proportional to 1,647.83, 2,470.15 and 551.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,647.83 : 2,470.15 = 551.58 : x
2. Step 2: Convert to fraction form
   1,647.83/2,470.15 = 551.58/x
3. Step 3: Cross multiply
   1,647.83x = 2,470.15 × 551.58
4. Step 4: Simplify right side
   1,647.83x = 1,362,485.34
5. Step 5: Solve for x
   x = 1,362,485.34/1,647.83
6. Step 6: Final answer
   x = 826.84