Finding the Fourth Proportional to 497,019.01, 745,748.00 and 385,666.69

Step by Step Solution

1. Step 1: Write the proportion equation
   497,019.01 : 745,748.00 = 385,666.69 : x
2. Step 2: Convert to fraction form
   497,019.01/745,748.00 = 385,666.69/x
3. Step 3: Cross multiply
   497,019.01x = 745,748.00 × 385,666.69
4. Step 4: Simplify right side
   497,019.01x = 287,610,160,805.79
5. Step 5: Solve for x
   x = 287,610,160,805.79/497,019.01
6. Step 6: Final answer
   x = 578,670.34