Finding the Fourth Proportional to 1,380.52, 1,900.02 and 1,099.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.52 : 1,900.02 = 1,099.84 : x
2. Step 2: Convert to fraction form
   1,380.52/1,900.02 = 1,099.84/x
3. Step 3: Cross multiply
   1,380.52x = 1,900.02 × 1,099.84
4. Step 4: Simplify right side
   1,380.52x = 2,089,718.00
5. Step 5: Solve for x
   x = 2,089,718.00/1,380.52
6. Step 6: Final answer
   x = 1,513.72