Finding the Fourth Proportional to 1,284.02, 1,922.76 and 1,077.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.02 : 1,922.76 = 1,077.50 : x
2. Step 2: Convert to fraction form
   1,284.02/1,922.76 = 1,077.50/x
3. Step 3: Cross multiply
   1,284.02x = 1,922.76 × 1,077.50
4. Step 4: Simplify right side
   1,284.02x = 2,071,773.90
5. Step 5: Solve for x
   x = 2,071,773.90/1,284.02
6. Step 6: Final answer
   x = 1,613.51