Finding the Fourth Proportional to 1,116.84, 1,674.18 and 1,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.84 : 1,674.18 = 1,047.72 : x
2. Step 2: Convert to fraction form
   1,116.84/1,674.18 = 1,047.72/x
3. Step 3: Cross multiply
   1,116.84x = 1,674.18 × 1,047.72
4. Step 4: Simplify right side
   1,116.84x = 1,754,071.87
5. Step 5: Solve for x
   x = 1,754,071.87/1,116.84
6. Step 6: Final answer
   x = 1,570.57