Finding the Fourth Proportional to 830,715.56, 1,146,388.50 and 448,742.34

Step by Step Solution

1. Step 1: Write the proportion equation
   830,715.56 : 1,146,388.50 = 448,742.34 : x
2. Step 2: Convert to fraction form
   830,715.56/1,146,388.50 = 448,742.34/x
3. Step 3: Cross multiply
   830,715.56x = 1,146,388.50 × 448,742.34
4. Step 4: Simplify right side
   830,715.56x = 514,433,058,039.09
5. Step 5: Solve for x
   x = 514,433,058,039.09/830,715.56
6. Step 6: Final answer
   x = 619,264.99