Finding the Fourth Proportional to 1,380.00, 1,903.60 and 875.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,380.00 : 1,903.60 = 875.67 : x
2. Step 2: Convert to fraction form
   1,380.00/1,903.60 = 875.67/x
3. Step 3: Cross multiply
   1,380.00x = 1,903.60 × 875.67
4. Step 4: Simplify right side
   1,380.00x = 1,666,919.37
5. Step 5: Solve for x
   x = 1,666,919.37/1,380.00
6. Step 6: Final answer
   x = 1,207.91