Finding the Fourth Proportional to 1,856.16, 2,784.96 and 702.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.16 : 2,784.96 = 702.72 : x
2. Step 2: Convert to fraction form
   1,856.16/2,784.96 = 702.72/x
3. Step 3: Cross multiply
   1,856.16x = 2,784.96 × 702.72
4. Step 4: Simplify right side
   1,856.16x = 1,957,047.09
5. Step 5: Solve for x
   x = 1,957,047.09/1,856.16
6. Step 6: Final answer
   x = 1,054.35