Finding the Fourth Proportional to 707,419.89, 976,366.78 and 417,014.15

Step by Step Solution

1. Step 1: Write the proportion equation
   707,419.89 : 976,366.78 = 417,014.15 : x
2. Step 2: Convert to fraction form
   707,419.89/976,366.78 = 417,014.15/x
3. Step 3: Cross multiply
   707,419.89x = 976,366.78 × 417,014.15
4. Step 4: Simplify right side
   707,419.89x = 407,158,756,925.57
5. Step 5: Solve for x
   x = 407,158,756,925.57/707,419.89
6. Step 6: Final answer
   x = 575,554.58