Finding the Fourth Proportional to 1,145.40, 1,719.72 and 1,002.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.40 : 1,719.72 = 1,002.84 : x
2. Step 2: Convert to fraction form
   1,145.40/1,719.72 = 1,002.84/x
3. Step 3: Cross multiply
   1,145.40x = 1,719.72 × 1,002.84
4. Step 4: Simplify right side
   1,145.40x = 1,724,604.00
5. Step 5: Solve for x
   x = 1,724,604.00/1,145.40
6. Step 6: Final answer
   x = 1,505.68