Finding the Fourth Proportional to 1,407.59, 2,111.49 and 433.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.59 : 2,111.49 = 433.69 : x
2. Step 2: Convert to fraction form
   1,407.59/2,111.49 = 433.69/x
3. Step 3: Cross multiply
   1,407.59x = 2,111.49 × 433.69
4. Step 4: Simplify right side
   1,407.59x = 915,728.04
5. Step 5: Solve for x
   x = 915,728.04/1,407.59
6. Step 6: Final answer
   x = 650.57