Finding the Fourth Proportional to 1,312,543.69, 1,811,311.50 and 708,931.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,543.69 : 1,811,311.50 = 708,931.69 : x
2. Step 2: Convert to fraction form
   1,312,543.69/1,811,311.50 = 708,931.69/x
3. Step 3: Cross multiply
   1,312,543.69x = 1,811,311.50 × 708,931.69
4. Step 4: Simplify right side
   1,312,543.69x = 1,284,096,120,941.65
5. Step 5: Solve for x
   x = 1,284,096,120,941.65/1,312,543.69
6. Step 6: Final answer
   x = 978,326.38