Finding the Fourth Proportional to 1,011.06, 1,395.50 and 591.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.06 : 1,395.50 = 591.62 : x
2. Step 2: Convert to fraction form
   1,011.06/1,395.50 = 591.62/x
3. Step 3: Cross multiply
   1,011.06x = 1,395.50 × 591.62
4. Step 4: Simplify right side
   1,011.06x = 825,595.77
5. Step 5: Solve for x
   x = 825,595.77/1,011.06
6. Step 6: Final answer
   x = 816.56