Finding the Fourth Proportional to 1,477.37, 2,212.40 and 1,086.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.37 : 2,212.40 = 1,086.45 : x
2. Step 2: Convert to fraction form
   1,477.37/2,212.40 = 1,086.45/x
3. Step 3: Cross multiply
   1,477.37x = 2,212.40 × 1,086.45
4. Step 4: Simplify right side
   1,477.37x = 2,403,656.55
5. Step 5: Solve for x
   x = 2,403,656.55/1,477.37
6. Step 6: Final answer
   x = 1,626.99