Finding the Fourth Proportional to 1,189.56, 1,640.00 and 835.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.56 : 1,640.00 = 835.01 : x
2. Step 2: Convert to fraction form
   1,189.56/1,640.00 = 835.01/x
3. Step 3: Cross multiply
   1,189.56x = 1,640.00 × 835.01
4. Step 4: Simplify right side
   1,189.56x = 1,369,404.02
5. Step 5: Solve for x
   x = 1,369,404.02/1,189.56
6. Step 6: Final answer
   x = 1,151.19