Finding the Fourth Proportional to 7,155.03, 10,731.34 and 1,890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.03 : 10,731.34 = 1,890.10 : x
2. Step 2: Convert to fraction form
   7,155.03/10,731.34 = 1,890.10/x
3. Step 3: Cross multiply
   7,155.03x = 10,731.34 × 1,890.10
4. Step 4: Simplify right side
   7,155.03x = 20,283,310.88
5. Step 5: Solve for x
   x = 20,283,310.88/7,155.03
6. Step 6: Final answer
   x = 2,834.83