Finding the Fourth Proportional to 2,953.72, 4,430.70 and 1,309.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.72 : 4,430.70 = 1,309.96 : x
2. Step 2: Convert to fraction form
   2,953.72/4,430.70 = 1,309.96/x
3. Step 3: Cross multiply
   2,953.72x = 4,430.70 × 1,309.96
4. Step 4: Simplify right side
   2,953.72x = 5,804,039.77
5. Step 5: Solve for x
   x = 5,804,039.77/2,953.72
6. Step 6: Final answer
   x = 1,964.99