Finding the Fourth Proportional to 1,549.35, 2,137.83 and 877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,549.35 : 2,137.83 = 877.15 : x
2. Step 2: Convert to fraction form
   1,549.35/2,137.83 = 877.15/x
3. Step 3: Cross multiply
   1,549.35x = 2,137.83 × 877.15
4. Step 4: Simplify right side
   1,549.35x = 1,875,197.58
5. Step 5: Solve for x
   x = 1,875,197.58/1,549.35
6. Step 6: Final answer
   x = 1,210.31