Finding the Fourth Proportional to 1,510.94, 2,084.50 and 920.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.94 : 2,084.50 = 920.45 : x
2. Step 2: Convert to fraction form
   1,510.94/2,084.50 = 920.45/x
3. Step 3: Cross multiply
   1,510.94x = 2,084.50 × 920.45
4. Step 4: Simplify right side
   1,510.94x = 1,918,678.03
5. Step 5: Solve for x
   x = 1,918,678.03/1,510.94
6. Step 6: Final answer
   x = 1,269.86