Finding the Fourth Proportional to 1,178,870.98, 1,768,651.53 and 380,136.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178,870.98 : 1,768,651.53 = 380,136.46 : x
2. Step 2: Convert to fraction form
   1,178,870.98/1,768,651.53 = 380,136.46/x
3. Step 3: Cross multiply
   1,178,870.98x = 1,768,651.53 × 380,136.46
4. Step 4: Simplify right side
   1,178,870.98x = 672,328,931,587.78
5. Step 5: Solve for x
   x = 672,328,931,587.78/1,178,870.98
6. Step 6: Final answer
   x = 570,315.96