Finding the Fourth Proportional to 2,778,700.47, 4,167,467.50 and 783,689.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778,700.47 : 4,167,467.50 = 783,689.91 : x
2. Step 2: Convert to fraction form
   2,778,700.47/4,167,467.50 = 783,689.91/x
3. Step 3: Cross multiply
   2,778,700.47x = 4,167,467.50 × 783,689.91
4. Step 4: Simplify right side
   2,778,700.47x = 3,266,002,230,002.93
5. Step 5: Solve for x
   x = 3,266,002,230,002.93/2,778,700.47
6. Step 6: Final answer
   x = 1,175,370.38