Finding the Fourth Proportional to 2,421.38, 3,633.86 and 1,773.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,421.38 : 3,633.86 = 1,773.78 : x
2. Step 2: Convert to fraction form
   2,421.38/3,633.86 = 1,773.78/x
3. Step 3: Cross multiply
   2,421.38x = 3,633.86 × 1,773.78
4. Step 4: Simplify right side
   2,421.38x = 6,445,672.63
5. Step 5: Solve for x
   x = 6,445,672.63/2,421.38
6. Step 6: Final answer
   x = 2,661.99