Finding the Fourth Proportional to 1,560.95, 2,153.30 and 1,056.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.95 : 2,153.30 = 1,056.82 : x
2. Step 2: Convert to fraction form
   1,560.95/2,153.30 = 1,056.82/x
3. Step 3: Cross multiply
   1,560.95x = 2,153.30 × 1,056.82
4. Step 4: Simplify right side
   1,560.95x = 2,275,650.51
5. Step 5: Solve for x
   x = 2,275,650.51/1,560.95
6. Step 6: Final answer
   x = 1,457.86