Finding the Fourth Proportional to 1,264.83, 1,897.74 and 443.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,264.83 : 1,897.74 = 443.69 : x
2. Step 2: Convert to fraction form
   1,264.83/1,897.74 = 443.69/x
3. Step 3: Cross multiply
   1,264.83x = 1,897.74 × 443.69
4. Step 4: Simplify right side
   1,264.83x = 841,998.77
5. Step 5: Solve for x
   x = 841,998.77/1,264.83
6. Step 6: Final answer
   x = 665.70