Finding the Fourth Proportional to 3,605.86, 5,406.72 and 1,412.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,605.86 : 5,406.72 = 1,412.02 : x
2. Step 2: Convert to fraction form
   3,605.86/5,406.72 = 1,412.02/x
3. Step 3: Cross multiply
   3,605.86x = 5,406.72 × 1,412.02
4. Step 4: Simplify right side
   3,605.86x = 7,634,396.77
5. Step 5: Solve for x
   x = 7,634,396.77/3,605.86
6. Step 6: Final answer
   x = 2,117.22