Finding the Fourth Proportional to 760,795.83, 1,049,885.42 and 421,256.79

Step by Step Solution

1. Step 1: Write the proportion equation
   760,795.83 : 1,049,885.42 = 421,256.79 : x
2. Step 2: Convert to fraction form
   760,795.83/1,049,885.42 = 421,256.79/x
3. Step 3: Cross multiply
   760,795.83x = 1,049,885.42 × 421,256.79
4. Step 4: Simplify right side
   760,795.83x = 442,271,359,790.72
5. Step 5: Solve for x
   x = 442,271,359,790.72/760,795.83
6. Step 6: Final answer
   x = 581,327.27