Finding the Fourth Proportional to 1,536.90, 2,299.86 and 1,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,536.90 : 2,299.86 = 1,230.72 : x
2. Step 2: Convert to fraction form
   1,536.90/2,299.86 = 1,230.72/x
3. Step 3: Cross multiply
   1,536.90x = 2,299.86 × 1,230.72
4. Step 4: Simplify right side
   1,536.90x = 2,830,483.70
5. Step 5: Solve for x
   x = 2,830,483.70/1,536.90
6. Step 6: Final answer
   x = 1,841.68