Finding the Fourth Proportional to 1,434.83, 1,980.12 and 930.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.83 : 1,980.12 = 930.79 : x
2. Step 2: Convert to fraction form
   1,434.83/1,980.12 = 930.79/x
3. Step 3: Cross multiply
   1,434.83x = 1,980.12 × 930.79
4. Step 4: Simplify right side
   1,434.83x = 1,843,075.89
5. Step 5: Solve for x
   x = 1,843,075.89/1,434.83
6. Step 6: Final answer
   x = 1,284.53