Finding the Fourth Proportional to 2,112.16, 2,910.72 and 1,490.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.16 : 2,910.72 = 1,490.08 : x
2. Step 2: Convert to fraction form
   2,112.16/2,910.72 = 1,490.08/x
3. Step 3: Cross multiply
   2,112.16x = 2,910.72 × 1,490.08
4. Step 4: Simplify right side
   2,112.16x = 4,337,205.66
5. Step 5: Solve for x
   x = 4,337,205.66/2,112.16
6. Step 6: Final answer
   x = 2,053.45