Finding the Fourth Proportional to 2,100.70, 2,896.96 and 1,381.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.70 : 2,896.96 = 1,381.62 : x
2. Step 2: Convert to fraction form
   2,100.70/2,896.96 = 1,381.62/x
3. Step 3: Cross multiply
   2,100.70x = 2,896.96 × 1,381.62
4. Step 4: Simplify right side
   2,100.70x = 4,002,497.88
5. Step 5: Solve for x
   x = 4,002,497.88/2,100.70
6. Step 6: Final answer
   x = 1,905.32