Finding the Fourth Proportional to 722,128, 996,570.88 and 435,641.94

Step by Step Solution

1. Step 1: Write the proportion equation
   722,128 : 996,570.88 = 435,641.94 : x
2. Step 2: Convert to fraction form
   722,128/996,570.88 = 435,641.94/x
3. Step 3: Cross multiply
   722,128x = 996,570.88 × 435,641.94
4. Step 4: Simplify right side
   722,128x = 434,148,071,510.71
5. Step 5: Solve for x
   x = 434,148,071,510.71/722,128
6. Step 6: Final answer
   x = 601,206.53