Finding the Fourth Proportional to 2,111.16, 3,166.70 and 551.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.16 : 3,166.70 = 551.04 : x
2. Step 2: Convert to fraction form
   2,111.16/3,166.70 = 551.04/x
3. Step 3: Cross multiply
   2,111.16x = 3,166.70 × 551.04
4. Step 4: Simplify right side
   2,111.16x = 1,744,978.37
5. Step 5: Solve for x
   x = 1,744,978.37/2,111.16
6. Step 6: Final answer
   x = 826.55