Finding the Fourth Proportional to 770,066.10, 1,155,295.98 and 296,624.34

Step by Step Solution

1. Step 1: Write the proportion equation
   770,066.10 : 1,155,295.98 = 296,624.34 : x
2. Step 2: Convert to fraction form
   770,066.10/1,155,295.98 = 296,624.34/x
3. Step 3: Cross multiply
   770,066.10x = 1,155,295.98 × 296,624.34
4. Step 4: Simplify right side
   770,066.10x = 342,688,907,572.15
5. Step 5: Solve for x
   x = 342,688,907,572.15/770,066.10
6. Step 6: Final answer
   x = 445,012.33