Finding the Fourth Proportional to 707,510.72, 976,382.29 and 385,238.45

Step by Step Solution

1. Step 1: Write the proportion equation
   707,510.72 : 976,382.29 = 385,238.45 : x
2. Step 2: Convert to fraction form
   707,510.72/976,382.29 = 385,238.45/x
3. Step 3: Cross multiply
   707,510.72x = 976,382.29 × 385,238.45
4. Step 4: Simplify right side
   707,510.72x = 376,140,002,929.55
5. Step 5: Solve for x
   x = 376,140,002,929.55/707,510.72
6. Step 6: Final answer
   x = 531,638.59