Finding the Fourth Proportional to 790,789.82, 1,186,546.18 and 430,420.82

Step by Step Solution

1. Step 1: Write the proportion equation
   790,789.82 : 1,186,546.18 = 430,420.82 : x
2. Step 2: Convert to fraction form
   790,789.82/1,186,546.18 = 430,420.82/x
3. Step 3: Cross multiply
   790,789.82x = 1,186,546.18 × 430,420.82
4. Step 4: Simplify right side
   790,789.82x = 510,714,179,763.47
5. Step 5: Solve for x
   x = 510,714,179,763.47/790,789.82
6. Step 6: Final answer
   x = 645,827.96