Finding the Fourth Proportional to 2,100.50, 3,151.14 and 695

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.50 : 3,151.14 = 695 : x
2. Step 2: Convert to fraction form
   2,100.50/3,151.14 = 695/x
3. Step 3: Cross multiply
   2,100.50x = 3,151.14 × 695
4. Step 4: Simplify right side
   2,100.50x = 2,190,042.30
5. Step 5: Solve for x
   x = 2,190,042.30/2,100.50
6. Step 6: Final answer
   x = 1,042.63