Finding the Fourth Proportional to 1,191.76, 1,785.54 and 1,064.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.76 : 1,785.54 = 1,064.60 : x
2. Step 2: Convert to fraction form
   1,191.76/1,785.54 = 1,064.60/x
3. Step 3: Cross multiply
   1,191.76x = 1,785.54 × 1,064.60
4. Step 4: Simplify right side
   1,191.76x = 1,900,885.88
5. Step 5: Solve for x
   x = 1,900,885.88/1,191.76
6. Step 6: Final answer
   x = 1,595.02