Finding the Fourth Proportional to 1,484.10, 2,221.47 and 1,327.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.10 : 2,221.47 = 1,327.57 : x
2. Step 2: Convert to fraction form
   1,484.10/2,221.47 = 1,327.57/x
3. Step 3: Cross multiply
   1,484.10x = 2,221.47 × 1,327.57
4. Step 4: Simplify right side
   1,484.10x = 2,949,151.37
5. Step 5: Solve for x
   x = 2,949,151.37/1,484.10
6. Step 6: Final answer
   x = 1,987.16