Finding the Fourth Proportional to 1,210.89, 1,815.72 and 593.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,210.89 : 1,815.72 = 593.67 : x
2. Step 2: Convert to fraction form
   1,210.89/1,815.72 = 593.67/x
3. Step 3: Cross multiply
   1,210.89x = 1,815.72 × 593.67
4. Step 4: Simplify right side
   1,210.89x = 1,077,938.49
5. Step 5: Solve for x
   x = 1,077,938.49/1,210.89
6. Step 6: Final answer
   x = 890.20