Finding the Fourth Proportional to 2,070.16, 3,103.98 and 1,421.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.16 : 3,103.98 = 1,421.80 : x
2. Step 2: Convert to fraction form
   2,070.16/3,103.98 = 1,421.80/x
3. Step 3: Cross multiply
   2,070.16x = 3,103.98 × 1,421.80
4. Step 4: Simplify right side
   2,070.16x = 4,413,238.76
5. Step 5: Solve for x
   x = 4,413,238.76/2,070.16
6. Step 6: Final answer
   x = 2,131.83