Finding the Fourth Proportional to 1,312,912, 1,811,818.56 and 709,300

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,912 : 1,811,818.56 = 709,300 : x
2. Step 2: Convert to fraction form
   1,312,912/1,811,818.56 = 709,300/x
3. Step 3: Cross multiply
   1,312,912x = 1,811,818.56 × 709,300
4. Step 4: Simplify right side
   1,312,912x = 1,285,122,904,608
5. Step 5: Solve for x
   x = 1,285,122,904,608/1,312,912
6. Step 6: Final answer
   x = 978,834