Finding the Fourth Proportional to 1,155.45, 1,729.61 and 924.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.45 : 1,729.61 = 924.84 : x
2. Step 2: Convert to fraction form
   1,155.45/1,729.61 = 924.84/x
3. Step 3: Cross multiply
   1,155.45x = 1,729.61 × 924.84
4. Step 4: Simplify right side
   1,155.45x = 1,599,607.89
5. Step 5: Solve for x
   x = 1,599,607.89/1,155.45
6. Step 6: Final answer
   x = 1,384.40