Finding the Fourth Proportional to 1,878.57, 2,591.94 and 1,214.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878.57 : 2,591.94 = 1,214.37 : x
2. Step 2: Convert to fraction form
   1,878.57/2,591.94 = 1,214.37/x
3. Step 3: Cross multiply
   1,878.57x = 2,591.94 × 1,214.37
4. Step 4: Simplify right side
   1,878.57x = 3,147,574.18
5. Step 5: Solve for x
   x = 3,147,574.18/1,878.57
6. Step 6: Final answer
   x = 1,675.52