Finding the Fourth Proportional to 2,119.89, 2,925.61 and 1,235.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.89 : 2,925.61 = 1,235.51 : x
2. Step 2: Convert to fraction form
   2,119.89/2,925.61 = 1,235.51/x
3. Step 3: Cross multiply
   2,119.89x = 2,925.61 × 1,235.51
4. Step 4: Simplify right side
   2,119.89x = 3,614,602.69
5. Step 5: Solve for x
   x = 3,614,602.69/2,119.89
6. Step 6: Final answer
   x = 1,705.09