Finding the Fourth Proportional to 1,300.48, 1,950.72 and 434.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.48 : 1,950.72 = 434.79 : x
2. Step 2: Convert to fraction form
   1,300.48/1,950.72 = 434.79/x
3. Step 3: Cross multiply
   1,300.48x = 1,950.72 × 434.79
4. Step 4: Simplify right side
   1,300.48x = 848,153.55
5. Step 5: Solve for x
   x = 848,153.55/1,300.48
6. Step 6: Final answer
   x = 652.19