Finding the Fourth Proportional to 2,525.86, 3,485.67 and 1,406.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,525.86 : 3,485.67 = 1,406.80 : x
2. Step 2: Convert to fraction form
   2,525.86/3,485.67 = 1,406.80/x
3. Step 3: Cross multiply
   2,525.86x = 3,485.67 × 1,406.80
4. Step 4: Simplify right side
   2,525.86x = 4,903,640.56
5. Step 5: Solve for x
   x = 4,903,640.56/2,525.86
6. Step 6: Final answer
   x = 1,941.37