Finding the Fourth Proportional to 1,435.72, 2,153.56 and 948.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.72 : 2,153.56 = 948.65 : x
2. Step 2: Convert to fraction form
   1,435.72/2,153.56 = 948.65/x
3. Step 3: Cross multiply
   1,435.72x = 2,153.56 × 948.65
4. Step 4: Simplify right side
   1,435.72x = 2,042,974.69
5. Step 5: Solve for x
   x = 2,042,974.69/1,435.72
6. Step 6: Final answer
   x = 1,422.96