Finding the Fourth Proportional to 1,360.85, 1,877.83 and 830.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360.85 : 1,877.83 = 830.00 : x
2. Step 2: Convert to fraction form
   1,360.85/1,877.83 = 830.00/x
3. Step 3: Cross multiply
   1,360.85x = 1,877.83 × 830.00
4. Step 4: Simplify right side
   1,360.85x = 1,558,595.63
5. Step 5: Solve for x
   x = 1,558,595.63/1,360.85
6. Step 6: Final answer
   x = 1,145.31