Finding the Fourth Proportional to 2,131.80, 3,182.48 and 1,803.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.80 : 3,182.48 = 1,803.66 : x
2. Step 2: Convert to fraction form
   2,131.80/3,182.48 = 1,803.66/x
3. Step 3: Cross multiply
   2,131.80x = 3,182.48 × 1,803.66
4. Step 4: Simplify right side
   2,131.80x = 5,740,111.88
5. Step 5: Solve for x
   x = 5,740,111.88/2,131.80
6. Step 6: Final answer
   x = 2,692.61