Finding the Fourth Proportional to 3,707.06, 5,561.89 and 1,857.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,707.06 : 5,561.89 = 1,857.77 : x
2. Step 2: Convert to fraction form
   3,707.06/5,561.89 = 1,857.77/x
3. Step 3: Cross multiply
   3,707.06x = 5,561.89 × 1,857.77
4. Step 4: Simplify right side
   3,707.06x = 10,332,679.93
5. Step 5: Solve for x
   x = 10,332,679.93/3,707.06
6. Step 6: Final answer
   x = 2,787.30