Finding the Fourth Proportional to 3,521.00, 5,278.01 and 1,961.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.00 : 5,278.01 = 1,961.72 : x
2. Step 2: Convert to fraction form
   3,521.00/5,278.01 = 1,961.72/x
3. Step 3: Cross multiply
   3,521.00x = 5,278.01 × 1,961.72
4. Step 4: Simplify right side
   3,521.00x = 10,353,941.58
5. Step 5: Solve for x
   x = 10,353,941.58/3,521.00
6. Step 6: Final answer
   x = 2,940.63