Finding the Fourth Proportional to 1,368.08, 1,886.10 and 1,229.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.08 : 1,886.10 = 1,229.72 : x
2. Step 2: Convert to fraction form
   1,368.08/1,886.10 = 1,229.72/x
3. Step 3: Cross multiply
   1,368.08x = 1,886.10 × 1,229.72
4. Step 4: Simplify right side
   1,368.08x = 2,319,374.89
5. Step 5: Solve for x
   x = 2,319,374.89/1,368.08
6. Step 6: Final answer
   x = 1,695.35