Finding the Fourth Proportional to 2,100.84, 2,898.42 and 1,261.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.84 : 2,898.42 = 1,261.82 : x
2. Step 2: Convert to fraction form
   2,100.84/2,898.42 = 1,261.82/x
3. Step 3: Cross multiply
   2,100.84x = 2,898.42 × 1,261.82
4. Step 4: Simplify right side
   2,100.84x = 3,657,284.32
5. Step 5: Solve for x
   x = 3,657,284.32/2,100.84
6. Step 6: Final answer
   x = 1,740.87