Finding the Fourth Proportional to 2,100.53, 3,150.83 and 694.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.53 : 3,150.83 = 694.95 : x
2. Step 2: Convert to fraction form
   2,100.53/3,150.83 = 694.95/x
3. Step 3: Cross multiply
   2,100.53x = 3,150.83 × 694.95
4. Step 4: Simplify right side
   2,100.53x = 2,189,659.23
5. Step 5: Solve for x
   x = 2,189,659.23/2,100.53
6. Step 6: Final answer
   x = 1,042.43