Finding the Fourth Proportional to 1,409.88, 2,112.32 and 948.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.88 : 2,112.32 = 948.05 : x
2. Step 2: Convert to fraction form
   1,409.88/2,112.32 = 948.05/x
3. Step 3: Cross multiply
   1,409.88x = 2,112.32 × 948.05
4. Step 4: Simplify right side
   1,409.88x = 2,002,576.78
5. Step 5: Solve for x
   x = 2,002,576.78/1,409.88
6. Step 6: Final answer
   x = 1,420.39