Finding the Fourth Proportional to 1,429.59, 1,973.30 and 1,099.11

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.59 : 1,973.30 = 1,099.11 : x
2. Step 2: Convert to fraction form
   1,429.59/1,973.30 = 1,099.11/x
3. Step 3: Cross multiply
   1,429.59x = 1,973.30 × 1,099.11
4. Step 4: Simplify right side
   1,429.59x = 2,168,873.76
5. Step 5: Solve for x
   x = 2,168,873.76/1,429.59
6. Step 6: Final answer
   x = 1,517.13