Finding the Fourth Proportional to 1,437.60, 1,983.83 and 879.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.60 : 1,983.83 = 879.01 : x
2. Step 2: Convert to fraction form
   1,437.60/1,983.83 = 879.01/x
3. Step 3: Cross multiply
   1,437.60x = 1,983.83 × 879.01
4. Step 4: Simplify right side
   1,437.60x = 1,743,806.41
5. Step 5: Solve for x
   x = 1,743,806.41/1,437.60
6. Step 6: Final answer
   x = 1,213.00