Finding the Fourth Proportional to 1,542.30, 2,128.56 and 953.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542.30 : 2,128.56 = 953.04 : x
2. Step 2: Convert to fraction form
   1,542.30/2,128.56 = 953.04/x
3. Step 3: Cross multiply
   1,542.30x = 2,128.56 × 953.04
4. Step 4: Simplify right side
   1,542.30x = 2,028,602.82
5. Step 5: Solve for x
   x = 2,028,602.82/1,542.30
6. Step 6: Final answer
   x = 1,315.31