Finding the Fourth Proportional to 1,451.94, 2,178.72 and 802.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.94 : 2,178.72 = 802.74 : x
2. Step 2: Convert to fraction form
   1,451.94/2,178.72 = 802.74/x
3. Step 3: Cross multiply
   1,451.94x = 2,178.72 × 802.74
4. Step 4: Simplify right side
   1,451.94x = 1,748,945.69
5. Step 5: Solve for x
   x = 1,748,945.69/1,451.94
6. Step 6: Final answer
   x = 1,204.56