Finding the Fourth Proportional to 1,279.56, 1,910.56 and 1,146.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279.56 : 1,910.56 = 1,146.93 : x
2. Step 2: Convert to fraction form
   1,279.56/1,910.56 = 1,146.93/x
3. Step 3: Cross multiply
   1,279.56x = 1,910.56 × 1,146.93
4. Step 4: Simplify right side
   1,279.56x = 2,191,278.58
5. Step 5: Solve for x
   x = 2,191,278.58/1,279.56
6. Step 6: Final answer
   x = 1,712.53