Finding the Fourth Proportional to 2,210.86, 3,051.01 and 1,216.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,210.86 : 3,051.01 = 1,216.12 : x
2. Step 2: Convert to fraction form
   2,210.86/3,051.01 = 1,216.12/x
3. Step 3: Cross multiply
   2,210.86x = 3,051.01 × 1,216.12
4. Step 4: Simplify right side
   2,210.86x = 3,710,375.61
5. Step 5: Solve for x
   x = 3,710,375.61/2,210.86
6. Step 6: Final answer
   x = 1,678.25