Finding the Fourth Proportional to 2,525.78, 3,485.46 and 1,406.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,525.78 : 3,485.46 = 1,406.77 : x
2. Step 2: Convert to fraction form
   2,525.78/3,485.46 = 1,406.77/x
3. Step 3: Cross multiply
   2,525.78x = 3,485.46 × 1,406.77
4. Step 4: Simplify right side
   2,525.78x = 4,903,240.56
5. Step 5: Solve for x
   x = 4,903,240.56/2,525.78
6. Step 6: Final answer
   x = 1,941.28