Finding the Fourth Proportional to 2,421.77, 3,627.18 and 1,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.77 : 3,627.18 = 1,120.50 : x
2. Step 2: Convert to fraction form
   2,421.77/3,627.18 = 1,120.50/x
3. Step 3: Cross multiply
   2,421.77x = 3,627.18 × 1,120.50
4. Step 4: Simplify right side
   2,421.77x = 4,064,255.19
5. Step 5: Solve for x
   x = 4,064,255.19/2,421.77
6. Step 6: Final answer
   x = 1,678.22