Finding the Fourth Proportional to 1,562.72, 2,156.60 and 1,065.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,562.72 : 2,156.60 = 1,065.58 : x
2. Step 2: Convert to fraction form
   1,562.72/2,156.60 = 1,065.58/x
3. Step 3: Cross multiply
   1,562.72x = 2,156.60 × 1,065.58
4. Step 4: Simplify right side
   1,562.72x = 2,298,027.10
5. Step 5: Solve for x
   x = 2,298,027.10/1,562.72
6. Step 6: Final answer
   x = 1,470.53