Finding the Fourth Proportional to 1,382,875.50, 2,074,663.17 and 385,603.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382,875.50 : 2,074,663.17 = 385,603.50 : x
2. Step 2: Convert to fraction form
   1,382,875.50/2,074,663.17 = 385,603.50/x
3. Step 3: Cross multiply
   1,382,875.50x = 2,074,663.17 × 385,603.50
4. Step 4: Simplify right side
   1,382,875.50x = 799,997,379,673.10
5. Step 5: Solve for x
   x = 799,997,379,673.10/1,382,875.50
6. Step 6: Final answer
   x = 578,502.82