Finding the Fourth Proportional to 2,038.56, 2,812.78 and 1,330.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,038.56 : 2,812.78 = 1,330.50 : x
2. Step 2: Convert to fraction form
   2,038.56/2,812.78 = 1,330.50/x
3. Step 3: Cross multiply
   2,038.56x = 2,812.78 × 1,330.50
4. Step 4: Simplify right side
   2,038.56x = 3,742,403.79
5. Step 5: Solve for x
   x = 3,742,403.79/2,038.56
6. Step 6: Final answer
   x = 1,835.81