Finding the Fourth Proportional to 3,647.77, 5,476.79 and 1,870.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,647.77 : 5,476.79 = 1,870.12 : x
2. Step 2: Convert to fraction form
   3,647.77/5,476.79 = 1,870.12/x
3. Step 3: Cross multiply
   3,647.77x = 5,476.79 × 1,870.12
4. Step 4: Simplify right side
   3,647.77x = 10,242,254.51
5. Step 5: Solve for x
   x = 10,242,254.51/3,647.77
6. Step 6: Final answer
   x = 2,807.81