Finding the Fourth Proportional to 2,364.72, 3,263.34 and 1,420.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,364.72 : 3,263.34 = 1,420.64 : x
2. Step 2: Convert to fraction form
   2,364.72/3,263.34 = 1,420.64/x
3. Step 3: Cross multiply
   2,364.72x = 3,263.34 × 1,420.64
4. Step 4: Simplify right side
   2,364.72x = 4,636,031.34
5. Step 5: Solve for x
   x = 4,636,031.34/2,364.72
6. Step 6: Final answer
   x = 1,960.50