Finding the Fourth Proportional to 2,100.63, 2,899.23 and 1,216.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.63 : 2,899.23 = 1,216.41 : x
2. Step 2: Convert to fraction form
   2,100.63/2,899.23 = 1,216.41/x
3. Step 3: Cross multiply
   2,100.63x = 2,899.23 × 1,216.41
4. Step 4: Simplify right side
   2,100.63x = 3,526,652.36
5. Step 5: Solve for x
   x = 3,526,652.36/2,100.63
6. Step 6: Final answer
   x = 1,678.85