Finding the Fourth Proportional to 2,118.63, 3,177.89 and 948.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.63 : 3,177.89 = 948.36 : x
2. Step 2: Convert to fraction form
   2,118.63/3,177.89 = 948.36/x
3. Step 3: Cross multiply
   2,118.63x = 3,177.89 × 948.36
4. Step 4: Simplify right side
   2,118.63x = 3,013,783.76
5. Step 5: Solve for x
   x = 3,013,783.76/2,118.63
6. Step 6: Final answer
   x = 1,422.52