Finding the Fourth Proportional to 1,641.98, 2,265.88 and 933.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.98 : 2,265.88 = 933.92 : x
2. Step 2: Convert to fraction form
   1,641.98/2,265.88 = 933.92/x
3. Step 3: Cross multiply
   1,641.98x = 2,265.88 × 933.92
4. Step 4: Simplify right side
   1,641.98x = 2,116,145.98
5. Step 5: Solve for x
   x = 2,116,145.98/1,641.98
6. Step 6: Final answer
   x = 1,288.78