Finding the Fourth Proportional to 1,312,225.31, 1,810,870.93 and 708,613.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,225.31 : 1,810,870.93 = 708,613.31 : x
2. Step 2: Convert to fraction form
   1,312,225.31/1,810,870.93 = 708,613.31/x
3. Step 3: Cross multiply
   1,312,225.31x = 1,810,870.93 × 708,613.31
4. Step 4: Simplify right side
   1,312,225.31x = 1,283,207,249,103.02
5. Step 5: Solve for x
   x = 1,283,207,249,103.02/1,312,225.31
6. Step 6: Final answer
   x = 977,886.37