Finding the Fourth Proportional to 1,259.27, 1,887.71 and 436.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259.27 : 1,887.71 = 436.98 : x
2. Step 2: Convert to fraction form
   1,259.27/1,887.71 = 436.98/x
3. Step 3: Cross multiply
   1,259.27x = 1,887.71 × 436.98
4. Step 4: Simplify right side
   1,259.27x = 824,891.52
5. Step 5: Solve for x
   x = 824,891.52/1,259.27
6. Step 6: Final answer
   x = 655.06