Finding the Fourth Proportional to 1,053.30, 1,454.05 and 784.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.30 : 1,454.05 = 784.79 : x
2. Step 2: Convert to fraction form
   1,053.30/1,454.05 = 784.79/x
3. Step 3: Cross multiply
   1,053.30x = 1,454.05 × 784.79
4. Step 4: Simplify right side
   1,053.30x = 1,141,123.06
5. Step 5: Solve for x
   x = 1,141,123.06/1,053.30
6. Step 6: Final answer
   x = 1,083.38