Finding the Fourth Proportional to 1,430.83, 1,975.50 and 1,098.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,430.83 : 1,975.50 = 1,098.67 : x
2. Step 2: Convert to fraction form
   1,430.83/1,975.50 = 1,098.67/x
3. Step 3: Cross multiply
   1,430.83x = 1,975.50 × 1,098.67
4. Step 4: Simplify right side
   1,430.83x = 2,170,422.59
5. Step 5: Solve for x
   x = 2,170,422.59/1,430.83
6. Step 6: Final answer
   x = 1,516.90