Finding the Fourth Proportional to 1,146.84, 1,722.06 and 942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.84 : 1,722.06 = 942.72 : x
2. Step 2: Convert to fraction form
   1,146.84/1,722.06 = 942.72/x
3. Step 3: Cross multiply
   1,146.84x = 1,722.06 × 942.72
4. Step 4: Simplify right side
   1,146.84x = 1,623,420.40
5. Step 5: Solve for x
   x = 1,623,420.40/1,146.84
6. Step 6: Final answer
   x = 1,415.56