Finding the Fourth Proportional to 2,300.72, 3,450.22 and 913.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.72 : 3,450.22 = 913.64 : x
2. Step 2: Convert to fraction form
   2,300.72/3,450.22 = 913.64/x
3. Step 3: Cross multiply
   2,300.72x = 3,450.22 × 913.64
4. Step 4: Simplify right side
   2,300.72x = 3,152,259.00
5. Step 5: Solve for x
   x = 3,152,259.00/2,300.72
6. Step 6: Final answer
   x = 1,370.12