Finding the Fourth Proportional to 2,210.96, 3,051.27 and 1,216.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.96 : 3,051.27 = 1,216.35 : x
2. Step 2: Convert to fraction form
   2,210.96/3,051.27 = 1,216.35/x
3. Step 3: Cross multiply
   2,210.96x = 3,051.27 × 1,216.35
4. Step 4: Simplify right side
   2,210.96x = 3,711,412.26
5. Step 5: Solve for x
   x = 3,711,412.26/2,210.96
6. Step 6: Final answer
   x = 1,678.64