Finding the Fourth Proportional to 2,101.07, 2,899.86 and 1,216.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.07 : 2,899.86 = 1,216.96 : x
2. Step 2: Convert to fraction form
   2,101.07/2,899.86 = 1,216.96/x
3. Step 3: Cross multiply
   2,101.07x = 2,899.86 × 1,216.96
4. Step 4: Simplify right side
   2,101.07x = 3,529,013.63
5. Step 5: Solve for x
   x = 3,529,013.63/2,101.07
6. Step 6: Final answer
   x = 1,679.63