Finding the Fourth Proportional to 2,101.60, 2,899.68 and 1,262.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.60 : 2,899.68 = 1,262.56 : x
2. Step 2: Convert to fraction form
   2,101.60/2,899.68 = 1,262.56/x
3. Step 3: Cross multiply
   2,101.60x = 2,899.68 × 1,262.56
4. Step 4: Simplify right side
   2,101.60x = 3,661,019.98
5. Step 5: Solve for x
   x = 3,661,019.98/2,101.60
6. Step 6: Final answer
   x = 1,742.02