Finding the Fourth Proportional to 1,890.16, 2,832.03 and 1,158.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.16 : 2,832.03 = 1,158.21 : x
2. Step 2: Convert to fraction form
   1,890.16/2,832.03 = 1,158.21/x
3. Step 3: Cross multiply
   1,890.16x = 2,832.03 × 1,158.21
4. Step 4: Simplify right side
   1,890.16x = 3,280,085.47
5. Step 5: Solve for x
   x = 3,280,085.47/1,890.16
6. Step 6: Final answer
   x = 1,735.35