Finding the Fourth Proportional to 1,190.29, 1,641.94 and 692.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190.29 : 1,641.94 = 692.88 : x
2. Step 2: Convert to fraction form
   1,190.29/1,641.94 = 692.88/x
3. Step 3: Cross multiply
   1,190.29x = 1,641.94 × 692.88
4. Step 4: Simplify right side
   1,190.29x = 1,137,667.39
5. Step 5: Solve for x
   x = 1,137,667.39/1,190.29
6. Step 6: Final answer
   x = 955.79