Finding the Fourth Proportional to 2,415.25, 3,333.02 and 1,421.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,415.25 : 3,333.02 = 1,421.09 : x
2. Step 2: Convert to fraction form
   2,415.25/3,333.02 = 1,421.09/x
3. Step 3: Cross multiply
   2,415.25x = 3,333.02 × 1,421.09
4. Step 4: Simplify right side
   2,415.25x = 4,736,521.39
5. Step 5: Solve for x
   x = 4,736,521.39/2,415.25
6. Step 6: Final answer
   x = 1,961.09