Finding the Fourth Proportional to 3,820.56, 5,274.89 and 2,645.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.56 : 5,274.89 = 2,645.25 : x
2. Step 2: Convert to fraction form
   3,820.56/5,274.89 = 2,645.25/x
3. Step 3: Cross multiply
   3,820.56x = 5,274.89 × 2,645.25
4. Step 4: Simplify right side
   3,820.56x = 13,953,402.77
5. Step 5: Solve for x
   x = 13,953,402.77/3,820.56
6. Step 6: Final answer
   x = 3,652.19