Finding the Fourth Proportional to 2,095.21, 2,891.90 and 1,210.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.21 : 2,891.90 = 1,210.88 : x
2. Step 2: Convert to fraction form
   2,095.21/2,891.90 = 1,210.88/x
3. Step 3: Cross multiply
   2,095.21x = 2,891.90 × 1,210.88
4. Step 4: Simplify right side
   2,095.21x = 3,501,746.90
5. Step 5: Solve for x
   x = 3,501,746.90/2,095.21
6. Step 6: Final answer
   x = 1,671.31