Finding the Fourth Proportional to 1,189.83, 1,641.97 and 692.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.83 : 1,641.97 = 692.76 : x
2. Step 2: Convert to fraction form
   1,189.83/1,641.97 = 692.76/x
3. Step 3: Cross multiply
   1,189.83x = 1,641.97 × 692.76
4. Step 4: Simplify right side
   1,189.83x = 1,137,498.16
5. Step 5: Solve for x
   x = 1,137,498.16/1,189.83
6. Step 6: Final answer
   x = 956.01