Finding the Fourth Proportional to 1,176.30, 1,772.72 and 1,059.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,176.30 : 1,772.72 = 1,059.31 : x
2. Step 2: Convert to fraction form
   1,176.30/1,772.72 = 1,059.31/x
3. Step 3: Cross multiply
   1,176.30x = 1,772.72 × 1,059.31
4. Step 4: Simplify right side
   1,176.30x = 1,877,860.02
5. Step 5: Solve for x
   x = 1,877,860.02/1,176.30
6. Step 6: Final answer
   x = 1,596.41