Finding the Fourth Proportional to 1,225.98, 1,827.28 and 1,156.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.98 : 1,827.28 = 1,156.79 : x
2. Step 2: Convert to fraction form
   1,225.98/1,827.28 = 1,156.79/x
3. Step 3: Cross multiply
   1,225.98x = 1,827.28 × 1,156.79
4. Step 4: Simplify right side
   1,225.98x = 2,113,779.23
5. Step 5: Solve for x
   x = 2,113,779.23/1,225.98
6. Step 6: Final answer
   x = 1,724.15