Finding the Fourth Proportional to 1,083.72, 1,625.51 and 434.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.72 : 1,625.51 = 434.00 : x
2. Step 2: Convert to fraction form
   1,083.72/1,625.51 = 434.00/x
3. Step 3: Cross multiply
   1,083.72x = 1,625.51 × 434.00
4. Step 4: Simplify right side
   1,083.72x = 705,461.04
5. Step 5: Solve for x
   x = 705,461.04/1,083.72
6. Step 6: Final answer
   x = 650.96