Finding the Fourth Proportional to 1,562.34, 2,155.47 and 1,003.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.34 : 2,155.47 = 1,003.12 : x
2. Step 2: Convert to fraction form
   1,562.34/2,155.47 = 1,003.12/x
3. Step 3: Cross multiply
   1,562.34x = 2,155.47 × 1,003.12
4. Step 4: Simplify right side
   1,562.34x = 2,162,195.07
5. Step 5: Solve for x
   x = 2,162,195.07/1,562.34
6. Step 6: Final answer
   x = 1,383.95